Palm treo smartphone keeps hanging

I used to get this a lot on mine, too. I think there may be a bug in the Treos that they're suppressing, or it may simply have compatibility issues with wide swaths of application software. Try a hard reset and then just use it with only the built-in applications for a week. If it's fine, add one or two new applications per week until you figure out which one(s) are causing the crashes.

I use my Palm for work, and I couldn't accept the unreliability of it, so I ended up upgrading to a Centro, and I've been much happier with it.