7.12 engine crashes on SCO Openserver 5

I have three Compaq Machines running SCO Openserver 5 release 5.00b Compaq ProSignia, 64 Mb, Informix 7.12 UC1 development Compaq ProLiant 4500, dual 133 Mhz Pentium, 64 Mb, 7.12 UC2 run-time Compaq ProLiant 5000, dual 166Mhz Pentium Pro, 128 Mb, 7.12 UC2 run-time In four days time al three engines crashed with the same error in the online.log file. A problem with shared memory followed by bad magic numbers, problems with a memory allocation in a certain C - source and then boom. Engine gone. DB fucked up. Nice. This happend on al 3 servers. It happend on the ProLiant while performing a alter table using dbaccess and on the ProSignia while performing a select. All tables accessed during the crash are FUBAR. Oncheck reports constraint problems and index-corruption. Informix Belgium informed me that this could be a bug in release 7.12, sometimes experienced on SCO and HP-UX platforms. Anybody experienced the same problems ??? I will post the online.log files if anybody would like to examine them. -- Koen