need help w/assert failure

engine: 7.31.UC5 o/s: solaris 2.5.1 We've had 2 assert failures with the following message: _________________________________________________________________________________ 07:10:42 Assert Failed: No Exception Handler 07:10:42 Informix Dynamic Server Version 7.30.UC10 07:10:42 Who: Session(5, informix@, 0, 0) Thread(11, tlitcppoll, 0, 5) File: mtex.c Line: 314 07:10:42 Results: Exception Caught. Type: MT_EX_OS, Context: mem 07:10:42 Action: Please notify Informix Technical Support. 07:11:04 See Also: /af/af.bdde2 07:11:04 mtex.c, line 314, thread 11, proc id 17281, No Exception Handler. 07:11:04 PANIC: Attempting to bring system down 07:39:34 Requested shared memory segment size rounded from 972000KB to983040KB ____________________________________________________________________________________ 07:41:53 Checkpoint Completed: duration was 0 seconds. 07:43:09 Assert Failed: No Exception Handler 07:43:09 Informix Dynamic Server Version 7.31.UC5 07:43:09 Who: Session(11, informix@, 0, 0) Thread(17, tlitcppoll, 0, 11) File: mtex.c Line: 446 07:43:09 Results: Exception Caught. Type: MT_EX_OS, Context: mem 07:43:09 Action: Please notify Informix Technical Support. 07:43:09 See Also: /af/af.3f92ced 07:43:09 mtex.c, line 446, thread 17, proc id 18179, No Exception Handler. 07:43:09 PANIC: Attempting to bring system down 07:48:05 Requested shared memory segment size rounded from 972000KB to983040KB 07:48:17 Segment locked: addr=0xa000000, size=1006632960 Tech support can't do anything for us due the fact that the af.* files coming from the crashes contain no stack info. Has anyone seen this before, or have any new insights on tlitcppoll threads? We've read everything in the SA books on them. thanks much- Katherine