EventThread crashing with 1.7.0_12-ea-b08

[Paul Taylor]

Using the latest early access version  of Java

macbook:jaikoz paul$ java -version
java version "1.7.0_12-ea"
Java(TM) SE Runtime Environment (build 1.7.0_12-ea-b08)
Java HotSpot(TM) 64-Bit Server VM (build 24.0-b28, mixed mode)


My application crashed on the Event Thread:

................................

...............................
Thread 24 Crashed:: Java: AWT-EventQueue-0
0 libsystem_kernel.dylib 0x00007fff9208a212 __pthread_kill + 10
1 libsystem_c.dylib 0x00007fff937cfaf4 pthread_kill + 90
2 libsystem_c.dylib 0x00007fff93813dce abort + 143
3 libjvm.dylib 0x0000000103f8ddfd os::abort(bool) + 25
4 libjvm.dylib 0x0000000104092506 VMError::report_and_die() + 2316
5 libjvm.dylib 0x0000000103f8f68f JVM_handle_bsd_signal + 1073
6 libsystem_c.dylib 0x00007fff937bc8ea _sigtramp + 26
7 libsystem_c.dylib 0x00007fff937e9e66 szone_free + 1922
8 com.apple.CoreFoundation 0x00007fff8f40ddd3 CFRelease + 1571
9 com.apple.CoreFoundation 0x00007fff8f439434 __CFBasicHashReplaceValue 
+ 180
10 com.apple.CoreFoundation 0x00007fff8f411fbd CFDictionarySetValue + 189
11 libosxui.dylib 0x000000015e198728 
Java_apple_laf_JRSUIControl_paintChangesImage + 154
12 ??? 0x0000000104897cd8 0 + 4371086552
13 ??? 0x000000010488b1d4 0 + 4371034580
14 ??? 0x0000000104a14d70 0 + 4372647280

......................
......................

Thread 24 crashed with X86 Thread State (64-bit):
   rax: 0x0000000000000000  rbx: 0x0000000000000006  rcx: 
0x000000016251daf8  rdx: 0x0000000000000000
   rdi: 0x000000000000c603  rsi: 0x0000000000000006  rbp: 
0x000000016251db20  rsp: 0x000000016251daf8
    r8: 0x00007fff7b92e278   r9: 0x000000016251dad0  r10: 
0x0000000020000000  r11: 0x0000000000000206
   r12: 0x0000000104378f60  r13: 0x00000001039b1000  r14: 
0x0000000162520000  r15: 0x0000000103f916de
   rip: 0x00007fff9208a212  rfl: 0x0000000000000206  cr2: 0x00007fff7b927fe8
Logical CPU: 0

I have the full output but have just posted the pertitent part here, is 
this a known bug, can anybody parse this ?

The crash conditons cannot be reproduced, it seems to crash at random