Thanks for the reply. I actually received this patch from Rockwell/Reliance tech support late last week. I tried it today and it eliminated the timeouts, although I didn't try uploading any programs. I am working with a test rack, and all my programs are small, so I'm not sure I could even give it a good test. I did take the VDD Wait Period setting off of "auto", and with a setting of 50ms it worked pretty good, although we still had a CPU utilization of around 90% with a full variable monitor window open. With just the task list up it was around 40%. I tried 100ms, and the CPU utilization dropped to 70-80%, but we started getting the timeouts again.
I also tried a program called TameDOS (which RA also recommended). Free to try, $20 to register. This also worked very well in eliminating the timeouts, but so far it hasn't done much for the CPU - about 98% with a full variable monitor window. Again, the computer runs hot, slow, and running on battery isn't an option. TameDOS does have a ton of settings and I plan to start tweaking as time allows. I'll keep you posted.
Thanks again,
-Brad