Palm also has an app you can download to wipe your device clean. I don't know if it will fix the issue, but if you have backups it woudln't hurt to try.
QUOTE:
The Device Reset application performs an erase on all the information that has been added to your Treo 700w/wx or 750 smartphone. This functions as much more than a hard reset by formatting the user storage on your smartphone and erasing all third-party applications, personal info, and settings.
You can get it here:
http://www.palm.com/us/support/downl...vicereset.html
Good luck.