Bugster crashes with jfk6u10b26, b27 (didn't ry other builds):
#
# An unexpected error has been detected by Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x8c00ecd4, pid=11340, tid=11944
#
# Java VM: Java HotSpot(TM) Client VM (11.0-b14 mixed mode, sharing windows-x86)
# Problematic frame:
# C 0x8c00ecd4
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

--------------- T H R E A D ---------------

Current thread (0x01462800): JavaThread "AWT-Windows" daemon [_thread_in_native, id=11944, stack(0x03cb0000,0x03d00000)]

siginfo: ExceptionCode=0xc0000005, reading address 0x8c00ecd4

Registers:
EAX=0x00000002, EBX=0x770c7ac1, ECX=0x00000000, EDX=0x03cfe6bc
ESP=0x03cfe690, EBP=0x03cfe6e8, ESI=0x00221bd8, EDI=0x00000000
EIP=0x8c00ecd4, EFLAGS=0x00010246

Top of Stack: (sp=0x03cfe690)
0x03cfe690: 75e2fcd6 0025053c 0000003d 000009cc
0x03cfe6a0: 00000000 00000002 00000003 3d1a936b
0x03cfe6b0: 00000000 00221bd8 770c7ac1 8c00ecd4
0x03cfe6c0: 00000002 00000003 770c7ac1 03cff088
0x03cfe6d0: 03cfe6ac 03cfe28c 03cfe774 75ed9521
0x03cfe6e0: 4b37897b 00000000 03cfe70c 75e2fc8b
0x03cfe6f0: 00000002 0025053c 0000003d 000009cc
0x03cfe700: 00000000 04227930 0000003d 000009cc

Instructions: (pc=0x8c00ecd4)
0x8c00ecc4:
[error occurred during error reporting (printing registers, top of stack, instructions near pc), id 0xc0000005]

Stack: [0x03cb0000,0x03d00000], sp=0x03cfe690, free space=313k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C 0x8c00ecd4
C [comctl32.dll+0x6fc8b]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j sun.awt.windows.WToolkit.eventLoop()V+0
j sun.awt.windows.WToolkit.run()V+69
j java.lang.Thread.run()V+11
v ~StubRoutines::call_stub

--------------- P R O C E S S ---------------

Java Threads: ( => current thread )
  0x0487d000 JavaThread "TimerQueue" daemon [_thread_blocked, id=11220, stack(0x07280000,0x072d0000)]
  0x04880400 JavaThread "AWT-EventQueue-0" [_thread_blocked, id=11468, stack(0x077a0000,0x077f0000)]
  0x0487e400 JavaThread "AWT-Shutdown" [_thread_blocked, id=11408, stack(0x07220000,0x07270000)]
  0x04880c00 JavaThread "D3D Screen Updater" daemon [_thread_blocked, id=11480, stack(0x06b90000,0x06be0000)]
  0x0487cc00 JavaThread "TimerQueue" daemon [_thread_blocked, id=11512, stack(0x078f0000,0x07940000)]
  0x01479000 JavaThread "CacheCleanUpThread" daemon [_thread_blocked, id=12100, stack(0x03fd0000,0x04020000)]
  0x0146f800 JavaThread "CacheMemoryCleanUpThread" [_thread_blocked, id=10520, stack(0x03f80000,0x03fd0000)]
  0x0146c400 JavaThread "traceMsgQueueThread" daemon [_thread_blocked, id=11532, stack(0x03eb0000,0x03f00000)]
  0x003e9c00 JavaThread "DestroyJavaVM" [_thread_blocked, id=11356, stack(0x007b0000,0x00800000)]
  0x01465400 JavaThread "Javaws Secure Thread" [_thread_blocked, id=10848, stack(0x03d00000,0x03d50000)]
=>0x01462800 JavaThread "AWT-Windows" daemon [_thread_in_native, id=11944, stack(0x03cb0000,0x03d00000)]
  0x01436800 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=12044, stack(0x036c0000,0x03710000)]
  0x01418800 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=11364, stack(0x03620000,0x03670000)]
  0x01414000 JavaThread "CompilerThread0" daemon [_thread_blocked, id=10708, stack(0x035d0000,0x03620000)]
  0x01413800 JavaThread "Attach Listener" daemon [_thread_blocked, id=11652, stack(0x03580000,0x035d0000)]
  0x01409000 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=10600, stack(0x03530000,0x03580000)]
  0x013c5000 JavaThread "Finalizer" daemon [_thread_blocked, id=12024, stack(0x034e0000,0x03530000)]
  0x013c3c00 JavaThread "Reference Handler" daemon [_thread_blocked, id=10324, stack(0x03490000,0x034e0000)]

Other Threads:
  0x013c2400 VMThread [stack: 0x01300000,0x01350000] [id=10756]
  0x01419800 WatcherThread [stack: 0x03670000,0x036c0000] [id=12264]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

ap
 def new generation total 1088K, used 517K [0x24020000, 0x24140000, 0x24500000)
  eden space 1024K, 44% used [0x24020000, 0x240915c8, 0x24120000)
  from space 64K, 100% used [0x24130000, 0x24140000, 0x24140000)
  to space 64K, 0% used [0x24120000, 0x24120000, 0x24130000)
 tenured generation total 13356K, used 8357K [0x24500000, 0x2520b000, 0x28020000)
   the space 13356K, 62% used [0x24500000, 0x24d29698, 0x24d29800, 0x2520b000)
 compacting perm gen total 12288K, used 9363K [0x28020000, 0x28c20000, 0x2c020000)
   the space 12288K, 76% used [0x28020000, 0x28944fd8, 0x28945000, 0x28c20000)
    ro space 8192K, 63% used [0x2c020000, 0x2c533888, 0x2c533a00, 0x2c820000)
    rw space 12288K, 53% used [0x2c820000, 0x2ce87c08, 0x2ce87e00, 0x2d420000)


See full hs_err file attached