Java version:
1.7.0_40-b43

OS X 10.8
FF 23
Jira: bugs.openjdk.java.net
Applet: Attach Screenshot (under "More Actions")

Console output:
Java Plug-in 10.40.2.43
Using JRE version 1.7.0_40-b43 Java HotSpot(TM) 64-Bit Server VM
User home directory = /Users/duke
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------
cache: Initialize resource manager: com.sun.deploy.cache.ResourceProviderImpl@129458ea
basic: tap installed
basic: Creating PluginEmbeddedFrame served by com.apple.java.jrs.carenderserver-35261
basic: Done creating PluginEmbeddedFrame
basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@2592cb49
basic: Plugin2ClassLoader.addURL parent called for https://bugs.openjdk.java.net/secure/applet/screenshot.jar
security: Accessing keys and certificate in Mozilla user profile: null
security: JSS is not configured
security: Blacklist revocation check is enabled
security: blacklist: created: NEED_LOAD, lastModified: 1378223624000
security: blacklist: hasBeenModifiedSince 1379684446598 (we have 1378223624000)
security: Trusted libraries list check is enabled
network: Cache entry found [url: https://bugs.openjdk.java.net/secure/applet/screenshot.jar, version: null] prevalidated=false/0
cache: Adding MemoryCache entry: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
cache: Resource https://bugs.openjdk.java.net/secure/applet/screenshot.jar has expired.
network: Connecting https://bugs.openjdk.java.net/secure/applet/screenshot.jar with proxy=HTTP @ rmdc-proxy.oracle.com/148.87.67.151:80
network: Cache entry not found [url: file:/Library/Internet%20Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/ext/sunec.jar, version: null]
network: Cache entry not found [url: file:/Library/Internet%20Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/ext/sunjce_provider.jar, version: null]
security: Loading Root CA certificates from /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/security/cacerts
security: Loaded Root CA certificates from /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/security/cacerts
security: Loading SSL Root CA certificates from /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/security/cacerts
security: Loaded SSL Root CA certificates from /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/security/cacerts
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Checking if SSL certificate is in Deployment permanent certificate store
security: Check if certificate can be verified using certificates in Root CA certificate store
security: Certificate to be verified:
<long list of certificates removed, as not relevant to the issue>
security: Certificate has been verified with Root CA certificates successfully
security: Invalid certificate from HTTPS server
basic: Dialog type is not candidate for embedding
security: Saving certificates in Deployment session certificate store
security: Saved certificates in Deployment session certificate store
network: Connecting https://bugs.openjdk.java.net/secure/applet/screenshot.jar with cookie "s_nr=1378236273294; AWSELB=4B417D29167379B88359E270231A3CFDBDD5CC2E9A172868FC3098742834CC9801FA10FC0A93A08DE44EE4622161227D458AE538C05E594C19953F2D93D5455CA552C26B01; s_cc=true; s_sq=%5B%5BB%5D%5D; crowd.jbs_token_key=43Kclo4OPZelQ7OcIE2Y6Q00; atlassian.xsrf.token=BI6B-LGJG-J48D-LFXB|ef8cdaf72023869bb723c53e0de4534b804faccf|lin"
network: Server https://bugs.openjdk.java.net/secure/applet/screenshot.jar requesting to set-cookie with "crowd.jbs_token_key=43Kclo4OPZelQ7OcIE2Y6Q00; Domain=.oracle.com; Path=/; Secure; HttpOnly"
network: Server https://bugs.openjdk.java.net/secure/applet/screenshot.jar requesting to set-cookie with "JSESSIONID=9339E746FE4D39F1F1F0E17282117D25; Path=/; HttpOnly"
network: ResponseCode for https://bugs.openjdk.java.net/secure/applet/screenshot.jar : 304
network: Encoding for https://bugs.openjdk.java.net/secure/applet/screenshot.jar : null
network: Disconnect connection to https://bugs.openjdk.java.net/secure/applet/screenshot.jar
cache: Reading Signers from 3582 https://bugs.openjdk.java.net/secure/applet/screenshot.jar | /Users/duke/Library/Application Support/Oracle/Java/Deployment/cache/6.0/20/49fa7314-4305bcda.idx
cache: Done readSigners(https://bugs.openjdk.java.net/secure/applet/screenshot.jar)
cache: Read manifest for https://bugs.openjdk.java.net/secure/applet/screenshot.jar: read=551 full=551
security: Trust for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar has ended: Wed Dec 31 16:00:00 PST 1969
Missing Permissions manifest attribute for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
Missing Codebase manifest attribute for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
security: Loading Deployment certificates from /Users/duke/Library/Application Support/Oracle/Java/Deployment/security/trusted.certs
security: Loaded Deployment certificates from /Users/duke/Library/Application Support/Oracle/Java/Deployment/security/trusted.certs
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Validate the certificate chain using CertPath API
security: Loading blacklisted.certs file: /Users/duke/Library/Application Support/Oracle/Java/Deployment/security/blacklisted.certs
security: SHA-256Certificate finger print: 4D1CF1CBB4EFA8634E2045ABE2F3708E5B65C01A3B4D9DEA222B77EB2D9AC988
security: SHA-256Certificate finger print: AF840CA2B9DFB776BF81AA94C401BC440C52E5C590C43607A13D6680D83E3349
security: SHA-256Certificate finger print: C99157DF28D28EBD87B8B041AACCF023CF1C9AD0D21FD7116149D7F96484FA51
security: Loading Root CA certificates from /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/security/cacerts
security: Loaded Root CA certificates from /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/security/cacerts
security: Obtain certificate collection in Root CA certificate store
security: Obtain certificate collection in Root CA certificate store
security: Obtain certificate collection in Root CA certificate store
security: Obtain certificate collection in Root CA certificate store
security: The OCSP support is enabled
security: The CRL support is enabled
security: Failing over to CRLs: Certificate does not specify OCSP responder
cache: CacheEntry IP mismatch: 23.5.245.163 != 23.7.69.163
network: Cache entry not found [url: http://crl.thawte.com/ThawtePremiumServerCA.crl, version: null]
network: Connecting http://crl.thawte.com/ThawtePremiumServerCA.crl with proxy=HTTP @ rmdc-proxy.oracle.com/148.87.67.151:80
network: Downloading resource: http://crl.thawte.com/ThawtePremiumServerCA.crl
Content-Length: 22,462
Content-Encoding: null
network: Wrote URL http://crl.thawte.com/ThawtePremiumServerCA.crl to File /Users/duke/Library/Application Support/Oracle/Java/Deployment/cache/6.0/38/2fb889a6-6c4fd0c8-temp
cache: Adding MemoryCache entry: http://crl.thawte.com/ThawtePremiumServerCA.crl
network: Connecting http://ocsp.thawte.com/ with proxy=HTTP @ rmdc-proxy.oracle.com/148.87.67.151:80
security: blacklist: hasBeenModifiedSince 1379684446598 (we have 1378223624000)
security: blacklist: hasBeenModifiedSince 1378839557995 (we have 1378223624000)
security: blacklist: hasBeenModifiedSince 1378839557995 (we have 1378223624000)
cache: CacheEntry IP mismatch: 23.5.245.163 != 23.7.69.163
security: OCSP Response: GOOD
network: Connecting http://ocsp.thawte.com/ with proxy=HTTP @ rmdc-proxy.oracle.com/148.87.67.151:80
network: CleanupThread used 369733 us
security: OCSP Response: GOOD
security: Certificate validation succeeded using OCSP/CRL
basic: Dialog type is not candidate for embedding
Trace level set to 5: all ... completed.security: User has granted the privileges to the code for this session only
security: Saving certificates in Deployment session certificate store
security: Saved certificates in Deployment session certificate store
security: Grant socket perm for https://bugs.openjdk.java.net/secure/applet/screenshot.jar : java.security.Permissions@73619950 (
 ("java.net.SocketPermission" "bugs.openjdk.java.net" "connect,accept,resolve")
)

security: Trust for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar has ended: Wed Dec 31 16:00:00 PST 1969
Missing Permissions manifest attribute for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
Missing Codebase manifest attribute for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
security: Validate the certificate chain using CertPath API
basic: Plugin2ClassLoader.getPermissions CeilingPolicy allPerms
Missing Permissions manifest attribute for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
Missing Codebase manifest attribute for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
security: Validate the certificate chain using CertPath API
ruleset: Non-jnlp rule id:
        title: com.atlassian.jira.screenshot.applet.ScreenshotApplet
        location: https://bugs.openjdk.java.net/secure/AttachScreenshot!default.jspa?id=4260126&decorator=popup
        main location: https://bugs.openjdk.java.net/secure/
        main version: null
        isArtifact: true
ruleset: finding Deployment Rule Set for
        title: com.atlassian.jira.screenshot.applet.ScreenshotApplet
        location: https://bugs.openjdk.java.net/secure/AttachScreenshot!default.jspa?id=4260126&decorator=popup
        main location: https://bugs.openjdk.java.net/secure/
        main version: null
        isArtifact: true
ruleset: no rule applies, returning Default Rule
security: SSV validation:
    running: 1.7.0_40
    requested: null
    range: null
    javaVersionParam: null
    Rule Set version: null
network: Created version ID: 1.7.0.40
network: Created version ID: 1.7.0.40
security: continue with running version
network: Created version ID: 1.7.0.40
network: Created version ID: 1.7
network: Created version ID: 2.2.40
security: --- parseCommandLine converted : -Djavaplugin.trace=true -Djavaplugin.logging=true -Djava.compiler=NONE -Xnoagent -Xdebug
into:
[-Djavaplugin.trace=true, -Djavaplugin.logging=true, -Djava.compiler=NONE, -Xnoagent, -Xdebug]
basic: AppletRelaunch due to vm args
network: Created version ID: 1.9
network: Created version ID: 1.8
network: Created version ID: 1.7
network: Created version ID: 1.6
network: Created version ID: 1.5
network: Created version ID: 1.4
network: Created version ID: 1.3
basic: WARNING - specified JRE version, null is invalid platform version
basic: Removed progress listener: sun.plugin.util.ProgressMonitorAdapter@2592cb49
basic: Saving session state to /var/folders/yp/lxy5qzqn053btnngfxbq9ggw0000gn/T/session5949819034940635794
basic: Creating PluginEmbeddedFrame served by com.apple.java.jrs.carenderserver-35261
basic: Done creating PluginEmbeddedFrame
preloader: Construct preloader delegate
preloader: Setting default preloader and progress monitor for non JNLP applets
basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@204804f8
preloader: Installing progress monitor true
preloader: Using preloader class: null com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter@36928c0f
preloader: Using default preloader
preloader: Requested to use preloader class: null
preloader: Skipped all (0) download events prior to null
basic: Plugin2ClassLoader.addURL parent called for https://bugs.openjdk.java.net/secure/applet/screenshot.jar
preloader: GrayBox: parent = sun.plugin2.main.client.PluginEmbeddedFrame[frame1,0,22,1x1,layout=java.awt.BorderLayout,title=,resizable,normal]
ruleset: Non-jnlp rule id:
        title: com.atlassian.jira.screenshot.applet.ScreenshotApplet
        location: https://bugs.openjdk.java.net/secure/AttachScreenshot!default.jspa?id=4260126&decorator=popup
        main location: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
        main version: null
        isArtifact: true
ruleset: finding Deployment Rule Set for
        title: com.atlassian.jira.screenshot.applet.ScreenshotApplet
        location: https://bugs.openjdk.java.net/secure/AttachScreenshot!default.jspa?id=4260126&decorator=popup
        main location: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
        main version: null
        isArtifact: true
ruleset: no rule applies, returning Default Rule
Missing Permissions manifest attribute for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
Missing Codebase manifest attribute for: https://bugs.openjdk.java.net/secure/applet/screenshot.jar
security: Validate the certificate chain using CertPath API
ruleset: Non-jnlp rule id:
        title: com.atlassian.jira.screenshot.applet.ScreenshotApplet
        location: https://bugs.openjdk.java.net/secure/AttachScreenshot!default.jspa?id=4260126&decorator=popup
        main location: https://bugs.openjdk.java.net/secure/
        main version: null
        isArtifact: true
ruleset: finding Deployment Rule Set for
        title: com.atlassian.jira.screenshot.applet.ScreenshotApplet
        location: https://bugs.openjdk.java.net/secure/AttachScreenshot!default.jspa?id=4260126&decorator=popup
        main location: https://bugs.openjdk.java.net/secure/
        main version: null
        isArtifact: true
ruleset: no rule applies, returning Default Rule
security: SSV validation:
    running: 1.7.0_40
    requested: null
    range: null
    javaVersionParam: null
    Rule Set version: null
network: Created version ID: 1.7.0.40
network: Created version ID: 1.7.0.40
security: continue with running version
network: Created version ID: 1.7.0.40
network: Created version ID: 1.7
network: Created version ID: 2.2.40
security: --- parseCommandLine converted : -Djavaplugin.trace=true -Djavaplugin.logging=true -Djava.compiler=NONE -Xnoagent -Xdebug
into:
[-Djavaplugin.trace=true, -Djavaplugin.logging=true, -Djava.compiler=NONE, -Xnoagent, -Xdebug]
basic: AppletRelaunch due to vm args
network: Created version ID: 1.9
network: Created version ID: 1.8
network: Created version ID: 1.7
network: Created version ID: 1.6
network: Created version ID: 1.5
network: Created version ID: 1.4
network: Created version ID: 1.3
basic: WARNING - specified JRE version, null is invalid platform version
basic: Removed progress listener: sun.plugin.util.ProgressMonitorAdapter@204804f8
basic: Saving session state to /var/folders/yp/lxy5qzqn053btnngfxbq9ggw0000gn/T/session9144074160602810033
Exception in thread "AWT-EventQueue-2" java.lang.NullPointerException
at sun.lwawt.macosx.CEmbeddedFrame.getLayerPtr(CEmbeddedFrame.java:65)
at sun.plugin2.main.client.PluginEmbeddedFrame.setBounds(Unknown Source)
at java.awt.Component.resize(Component.java:2166)
at java.awt.Component.setSize(Component.java:2155)
at java.awt.Window.setSize(Window.java:908)
at com.sun.deploy.uitoolkit.impl.awt.AWTFrameWindow$1.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Exception in thread "AWT-EventQueue-2" java.lang.NullPointerException
at sun.lwawt.macosx.CEmbeddedFrame.getLayerPtr(CEmbeddedFrame.java:65)
at sun.plugin2.main.client.PluginEmbeddedFrame.setBounds(Unknown Source)
at java.awt.Component.resize(Component.java:2166)
at java.awt.Component.setSize(Component.java:2155)
at java.awt.Window.setSize(Window.java:908)
at com.sun.deploy.uitoolkit.impl.awt.AWTFrameWindow$1.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Exception in thread "AWT-EventQueue-2" java.lang.NullPointerException
at sun.lwawt.macosx.CEmbeddedFrame.getLayerPtr(CEmbeddedFrame.java:65)
at sun.plugin2.main.client.PluginEmbeddedFrame.setBounds(Unknown Source)
at java.awt.Component.resize(Component.java:2166)
at java.awt.Component.setSize(Component.java:2155)
at java.awt.Window.setSize(Window.java:908)
at com.sun.deploy.uitoolkit.impl.awt.AWTFrameWindow$1.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)


When running with these flags the Console does not lockup, but applet still fails:
-Djavaplugin.trace=true -Djavaplugin.logging=true -Djava.compiler=NONE -Xnoagent -Xdebug