Thanks!
I've reinstalled 8.5.3 a few times, but it hasn't seem to have improved anything. The big application I'm working on has a LONG XPage that has a lot of different things in it. It's usually slow to open, at the best of times, so this could be why you find opening a big XPage slow, too. I'm not sure if there's a recommended limit, but I can ask some IBM people about it.
I know Notes 9 comes out next month, and is supposed to have some XPage improvements. 8.5.4 is supposed to come out in the spring, and perhaps more importantly, I should get a new work computer in the spring, too! I get the feeling that a Windows 7, 8GB RAM computer will serve me better than my old clunker is now.
Take care!
Steve in NYC