When running Merlin b80 with Java Plug-in, starting up an applet usually causes NullPointerException in sun/applet/AppletPanel.java. The NullPointerException is thrown in Thread.isInterrupted().

java.lang.NullPointerException
at sun.applet.AppletPanel.run(AppletPanel.java:298)
at java.lang.Thread.run(Thread.java:539)

Attaching a debugger with Internet Explorer and starts Java Plug-in, an Access violation is caught inside jvm.dll:

03f3ec85()
03f3306d()
03f30177()
JVM! 6d35c96f()
JVM! 6d39092d()
JVM! 6d35c883()
JVM! 6d35c600()
JVM! 6d37199b()
JVM! 6d3af0fc()
JVM! 6d3af0cc()
MSVCRT! 7800265a()
KERNEL32! 77f04ede()

Apparently, the call in MSVCRT is end_threadex(), which causes jvm.dll to throw NullPointerException in other Java codes eventually.

This problem can be reproduced very easy on Win32 with IE5.5 and Merlin b80.