Greetings,
We have been running ML7 on an AIX 5.1 OS with the 3.8.1P REV4 engine for over a month with no issues noted so far. The current hardware is an IBM 7026 Model 681 with 4 Gig of memory and 4 CPUs. Plans call for moving to an IBM P630.
I hope that this helps you out.
BobR
