"i fixed it by deleting the "Palm Desktop Info" file in the preferences folder of my user library."
This worked for me, but note that it will trash all your custom colors and stuff.
"Palm Desktop "Unexpectedly Quits" after selecting the 'Quit' command from the File menu.
If the 'display alarm dialogs' option is turned on, Palm Desktop will crash ('unexpectedly quit') when closing the application. palmOne recommends that users turn off 'Show alarm dialogs' in Palm Desktop preferences if they are using Mac OS X 10.3.x."