JVM 1.6 crash on java.util.concurrent.LinkedBlockingQueue$Itr.remove()

FULL PRODUCT VERSION :
Java VM: Java HotSpot(TM) Client VM (1.6.0_01-b06 mixed mode)

FULL OS VERSION :
OS: Windows Server 2003 family Build 3790 Service Pack 2

CPU:total 2 family 15, cmov, cx8, fxsr, mmx, sse, sse2, mmxext, 3dnowext, 3dnow

Memory: 4k page, physical 2096584k(1026604k free), swap 4038796k(3007084k free)

vm_info: Java HotSpot(TM) Client VM (1.6.0_01-b06) for windows-x86, built on Mar 14 2007 00:24:02 by "java_re" with unknown MS VC++:1310


A DESCRIPTION OF THE PROBLEM :
Our company is doing the jvm clustering. The test is to simulate the
accessing LinkedBlockingQueue through multiple jvms.
There are two shared LinkedBlockingQueues and multiple nodes (each node
represents one jvm, just like extends thread
synchronization to jvm level). Multiple nodes are putting data into
queue1 and, in the mean time, multiple nodes are getting
data out of queue1 and put into queue2. The jvm crash only happened with
jvm 1.6, not with 1.5.

THE PROBLEM WAS REPRODUCIBLE WITH -Xint FLAG: Did not try

THE PROBLEM WAS REPRODUCIBLE WITH -server FLAG: Did not try

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Stack trace attached seperatly

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Attached seperatly
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REPRODUCIBILITY :
This bug can be reproduced often.