Customer reported a crash with 5.0 U7. Key points in 65387768_hs_err_pid160.log are:

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# Internal Error (4E4D4554484F440E4350500525), pid=160, tid=2624
#
# Java VM: Java HotSpot(TM) Server VM (1.5.0_07-erdist-b20061110 mixed mode)

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

Current thread (0x348dfc10): JavaThread "Receive:WS[10.82.37.6:1289/3000]" [_thread_in_Java, id=2624]

Stack: [0x37bd0000,0x37c10000)
[error occurred during error reporting, step 110, id 0xc0000005]

Decoding led to nmethod.cpp, 1317. But this file was not found in 5u7. But nmethod.cpp is in 5u6 and 5u8.

1317 guarantee(cont_offset != 0, "unhandled implicit exception in compiled code");

SunSolve had 13 hits. The first one is bug 6527749. Bug says

  Evaluation:
  Possible the problem addressed in 6454444 which is fixed in 1.5.0_12.

  Comments:
  Both error logs corresponds to a failed guarantee in nmethod.cpp line 1321:

  guarantee(cont_offset != 0, "unhandled implicit exception in compiled code");

  This might be related to 6301513 or 6427750 <end of bug>

Is this customer seeing the same problem as reported in 6527749?

The customer reported another crash, and sent in hs_err_pid600.log. Can you confirm if this is the same issue?