Solved

My Palm is now running perfectly well again. A hard reset and reinstallation of the apps solved the problems I mentioned in my previous post.

One great thing about Palm is that the transfer of important data (contacts, calendar, memos) is fast and easy. After doing the hard reset, I just had to reinstall my apps from a backup folder that I copied from the PalmOne directory on my PC, and I’m ready to use my Treo again.