CRITICAL SITUATION - who has seen this Page Check Error problem

We are in dire straits at this time. We are running informix 7.11.uc.1 on an HP 9000 h70, HP-UX 9.04. We are using the NikeArrays with 6-2gig drives configured as 2 RAID 5 devices(Please don't make fun, it wasn't my doing). We have split the data in two. Half the tables reside on one device, with its indexes detached onto the second RAID 5 device and vice versa. This is the problem. Over the last 2 weeks the engine has crashed 5 times with Page Check Errors usually pointing to bad pages or bad current nodes. Onchecks and dumps of the data pages are showing data pages belonging to Chunk 10 which is dedicated to Indexes showing up in Chunk 6 which is dedicated to tables only. Has anyone seen anything like this. We have had a production system down for 2 days and neither Informix nor HP has been able to diagnose this one yet. As a side note, we are seeing some of the same problems on a separate HP 900 k400 running HPUX 10.01. Also Informix is same at 7.11.uc1. However, using RAID 0 here. One last thing. This problem occurred within 24hrs after an upgrade to 7.11 from 6.00. However, the second system has been running 7.11 for over a year. Barry Leb National Linen Service 1420 Peachtree Street MS #230 Atlanta, GA 30309 e-mail: barryleb@mindspring.com