FULL PRODUCT VERSION :
Java SE 1.6.0_23

ADDITIONAL OS VERSION INFORMATION :
Windows XP

A DESCRIPTION OF THE PROBLEM :
Received a random crash/hang from the java plugin2 when running a jnlp applet. It only happened once but i was able to catch the exception thrown out.

Console output pasted below.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Very rarely happens when starting a jnlp applet

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
not to happen
ACTUAL -
happens rarely

ERROR MESSAGES/STACK TRACES THAT OCCUR :
sun.plugin2.main.client.PluginMain: unrecognized message ID 42
Exception in thread "Thread-13" java.lang.NoClassDefFoundError: Could not initialize class sun.security.provider.SeedGenerator
at sun.security.provider.SecureRandom.engineNextBytes(Unknown Source)
at java.security.SecureRandom.nextBytes(Unknown Source)
at java.security.SecureRandom.next(Unknown Source)
at java.util.Random.nextInt(Unknown Source)
at com.sun.deploy.cache.Cache.getRandom(Unknown Source)
at com.sun.deploy.cache.Cache$15.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.cache.Cache.generateCacheFileName(Unknown Source)
at com.sun.deploy.cache.Cache.downloadResourceToTempFile(Unknown Source)
at com.sun.deploy.cache.Cache.downloadResourceToCache(Unknown Source)
at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
at com.sun.deploy.net.DownloadEngine.getCachedFile(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
at sun.plugin2.applet.JNLP2Manager.initialize(Unknown Source)
at sun.plugin2.main.client.PluginMain.initManager(Unknown Source)
at sun.plugin2.main.client.PluginMain.access$300(Unknown Source)
at sun.plugin2.main.client.PluginMain$2.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

REPRODUCIBILITY :
This bug can be reproduced rarely.