SceneGraph Demo applets fails to load using Kernel JRE due to no heat beat reply.
I think we need to increase the heart reply timeout.

Steps to reproduce:
Install Kernel JRE ( make sure that BackgroundDownloader is off)
set JPI_PLUGIN2_DEBUG=1 (for debugging)
<IEXPLORE.EXE> https://scenegraph-demos.dev.java.net/demo-applets.html

Applet is not even loading - Plugin2 throws various exceptions. It is due to heart beat reply.

First time while loading I got this exception : (in debug window)
Reusing JVM instance with product version 1.6.0.10.rc; best available product ve
rsion 1.6.0.10.rc
JVMManager reusing JVMInstance for product version 1.6.0.10.rc
JVMInstance for 1.6.0.10.rc sending start applet message
  isRelaunch: false
  Parameters:
    demo.classname=demo.dynamic.DynamicDemo
    jnlp_href=scenario-applet.jnlp
    height=380
    java_arguments=-Xmx128m
    width=380
    code=CompatibilityApplet
    archive=CompatibilityApplet.jar
    java_version=1.6.0_10
    codebase=http://download.java.net/javadesktop/plugin2/scenegraph/
JVMManager: applet launch (ID [AppletID 6]) succeeded
  Received applet ID [AppletID 6]
IExplorerPlugin.SetObjectRects(cAxControl = 0x2114c68, left = 380, right = 580,
top = 252, bottom = 452)
IExplorerPlugin.SetObjectRects(cAxControl = 0x59249a0, left = 977, right = 1217,
 top = 252, bottom = 582)
IExplorerPlugin.SetObjectRects(cAxControl = 0x597eb10, left = 320, right = 640,
top = 620, bottom = 1120)
IExplorerPlugin.SetObjectRects(cAxControl = 0x6300f28, left = 897, right = 1297,
 top = 620, bottom = 1020)
JVMInstance for 1.6.0.10.rc killing sub-process because of no heartbeat reply
Terminating Java Plug-In Pipe Worker Thread (Server-Side) due to exception:
java.io.IOException: Error 0 reading from named pipe, numRead 0, ReadFile ts: 4182132613, now ts: 4183907204, dT 1774591
JVM instance for 1.6.0.10.rc exited
  LiveConnectSupport.shutdown(1)
        at sun.plugin2.ipc.windows.WindowsNamedPipe.read(Unknown Source)
  LiveConnectSupport.shutdown(2)
        at sun.plugin2.message.transport.NamedPipeTransport$SerializerImpl.read(Unknown Source) LiveConnectSupport.shutdown(3)

  LiveConnectSupport.shutdown(4)
        at sun.plugin2.message.transport.NamedPipeTransport$SerializerImpl.readByte(Unknown Source)
  LiveConnectSupport.shutdown(5)

  LiveConnectSupport.shutdown(6)
        at sun.plugin2.message.AbstractSerializer.readInt(Unknown Source)
        at sun.plugin2.message.transport.SerializingTransport.read(Unknown Source)
        at sun.plugin2.message.Pipe$WorkerThread.run(Unknown Source)
java.lang.InterruptedException
        at java.lang.Object.wait(Native Method)
        at sun.plugin2.message.Queue.waitForMessage(Unknown Source)
        at sun.plugin2.message.Pipe.receive(Unknown Source)
        at sun.plugin2.main.server.JVMInstance$WorkerThread.run(Unknown Source)

Second time while loading I got again another exception reason is same no heart beat reply.
JVMInstance for 1.6.0.10.rc killing sub-process because of no heartbeat reply
JVM instance for 1.6.0.10.rc exited
  LiveConnectSupport.shutdown(1)
  LiveConnectSupport.shutdown(2)
  LiveConnectSupport.shutdown(3)java.lang.InterruptedException

  LiveConnectSupport.shutdown(4)
        at java.lang.Object.wait(Native Method) LiveConnectSupport.shutdown(5)

  LiveConnectSupport.shutdown(6) at sun.plugin2.message.Queue.waitForMess
age(Unknown Source)

Terminating Java Plug-In Pipe Worker Thread (Server-Side) due to exception:
at sun.plugin2.message.Pipe.receive(Unknown Source)

        at sun.plugin2.main.server.JVMInstance$WorkerThread.run(Unknown Source)
java.io.IOException: Error 0 reading from named pipe, numRead 0, ReadFile ts: 44
18806243, now ts: 4418961072, dT 154829
        at sun.plugin2.ipc.windows.WindowsNamedPipe.read(Unknown Source)
        at sun.plugin2.message.transport.NamedPipeTransport$SerializerImpl.read(
Unknown Source)
        at sun.plugin2.message.transport.NamedPipeTransport$SerializerImpl.readB
yte(Unknown Source)
        at sun.plugin2.message.AbstractSerializer.readInt(Unknown Source)
        at sun.plugin2.message.transport.SerializingTransport.read(Unknown Sourc
e)
        at sun.plugin2.message.Pipe$WorkerThread.run(Unknown Source)


Thread Dump during No heart beat reply :
2008-07-15 00:46:20
Full thread dump Java HotSpot(TM) Kernel VM (11.0-b14 mixed mode):

"traceMsgQueueThread" daemon prio=6 tid=0x05a53800 nid=0x9b8 in Object.wait() [0
x0384f000..0x0384fcd4]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0x08240d58> (a java.util.ArrayList)
        at java.lang.Object.wait(Object.java:485)
        at com.sun.deploy.util.Trace$TraceMsgQueueChecker.run(Unknown Source)
        - locked <0x08240d58> (a java.util.ArrayList)
        at java.lang.Thread.run(Unknown Source)

"Low Memory Detector" daemon prio=6 tid=0x059d8400 nid=0xe60 runnable [0x0000000
0..0x00000000]
   java.lang.Thread.State: RUNNABLE

"CompilerThread0" daemon prio=10 tid=0x059d7000 nid=0x3d8 waiting on condition [
0x00000000..0x05f7f680]
   java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=10 tid=0x059d6800 nid=0xfa4 waiting on condition
 [0x00000000..0x00000000]
   java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=8 tid=0x059c5000 nid=0x450 in Object.wait() [0x05d7f000.
.0x05d7fc54]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0x082c8958> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(Unknown Source)
        - locked <0x082c8958> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(Unknown Source)
        at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)

"Reference Handler" daemon prio=10 tid=0x059c0400 nid=0xa80 in Object.wait() [0x
05c7f000..0x05c7fcd4]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0x082c89e0> (a java.lang.ref.Reference$Lock)
        at java.lang.Object.wait(Object.java:485)
        at java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)
        - locked <0x082c89e0> (a java.lang.ref.Reference$Lock)

"main" prio=6 tid=0x02119c00 nid=0xd48 runnable [0x00000000..0x0013e7a4]
   java.lang.Thread.State: RUNNABLE

"VM Thread" prio=10 tid=0x059bcc00 nid=0x110 runnable

"VM Periodic Task Thread" prio=10 tid=0x059da800 nid=0x714 waiting on condition


JNI global references: 727