There may be database corruption causing the issue. Click on the following link for the program called DbFixiT. This program has a trial version that you can download and install on your Palm OS device. The trial version will scan for database corruption and then report the corruption. You can then find the records causing the problem and fix them yourself or you can purchase the program and have it automatically fix the records.
http://www.pimlicosoftware.com/dbfixit.htm
To install the program, set all conduits to "do nothing" except quick install or install if using Palm desktop 6.2.
After you install the program on the handheld, run the scan and also scan for Blobs in the calendar.
After you clean-up the database on the handheld, set the conduits in hotsync to handheld overwrites desktop and perform a hotsync.
For reference purposes, click on the following link for the support page for your device on the kb.palm.com webpage.
http://kb.palm.com/wps/portal/kb/na/tungsten/tx/unlocked/home/page_en.html
There are links on the page to the user guide, troubleshooting, how to's, downloads, etc.
