ER /checksum failures

Checksum is producing the FOLLOWING errors below, does anyone have any idea why it is happening? Of the 92 replicates 7 fail to work with checksum. 3 fail with "ISAM error: deadlock detected" when running in repair mode (-R). These same 3 work just fine when run in check only mode. 4 fail with "Memory fault(coredump)" ============ Informix Version ============ IBM Informix Dynamic Server Version 10.00.UC4 ============ Server ============ AIX 5.2 32 bit ============ For the 3 that fail with "deadlock error" here is an example of running check sum in check only mode ============ $ time cdr check repl --all -m g_toltp -r chb_legacy_rel ------ Statistics for chb_legacy_rel ------ Node Rows Extra Missing Mismatch Processed ---------------- --------- --------- --------- --------- --------- g_toltp 1542937 0 0 0 0 g_trptg 1542958 25 4 89 0 WARNING: replicate is not in sync real 15m35.95s user 0m17.90s sys 0m1.37s ============ For the 3 that fail with "deadlock error" here is an example of running check sum in repair mode Notice how long before failure. Almost at the end. ============ $ time cdr check repl -R --all -m g_toltp -r chb_legacy_rel ------ Statistics for chb_legacy_rel ------ ERROR Code -243 Isam -143 File replcheck.ec Line 4429 fetch of cur_2632 Could not position within a table (%s). ISAM error: deadlock detected real 15m14.39s user 0m17.15s sys 0m1.83s ============ for the 4 that core dump here is an example of running check sum in check only mode ============ $ time cdr check repl --all -m g_toltp -r quote_cvg Error at line:4273 - Select index parts for sysadm.quote_cvg ***ABORTING*** repl-check.ksh[3]: 175450 Memory fault(coredump)