IDS 9.3 on AIX 5.2

Hi everyone. We're preparing to introduce a new platform into our environment, AIX 5.2 running on IBM P-series 630 and 650 hardware. I've been tasked with taking an informal poll of AIX users to find out which Informix 9.3 engine release level runs most reliably and stably on that platform. If you're running IDS on AIX in an environment larger than 100 GB, I'd like to hear from you. What release level are you using? What bugs or problems have you encountered? How long have you been running your current engine version on that platform? Any help and/or advice you could give would be greatly appreciated. Thanks in advance, - Tom Girsch