Thanks, Chris. You are right about the JVM settings. Jagtool stopped working correctly on some of the larger targets and I had to add some java parameters to make it work. I haven't seen much issue with memory yet, I will keep a watch.
On this note, do you have any comments/suggestions on my other question about upgrading the JVM to 1.5.0_22. It does work and it solves the problem of EAServer assuming GMT timezone. I am wondering if I will be stepping on any other module inside EAS.
Thanks for that tip about remote debugging.
I am only doing the proof of concept at the moment (with so many things changing - PVCS, Powergen, Windows OS etc). Our entire team will start testing soon, I am hoping to catch most of the issues then.