Are you running WM5? If so, have you applied the fake server trick?
http://www.aximsite.com/boards/x50-x...discharge.html
If you're still running WM2003SE, how much program memory do you have? Are you installing programs in the default location (i.e., main memory)? Have you cleared out temp files, cookies, etc.? Try a cleaner utility such as MemMaid or SKTools to help you do some maintenance (both have free trials).