How often do you soft reset your PPC? This may sound like a silly question, but unless you have some of the after-market bugfixing software, the database used to store the alarms can in some situations increase in size for every soft reset (some claim doubling after soft reset). So the more you reset your PPC, the more its memory will shrink (this was reported specifically for 221x's as I recall).
I'm looking for the thread that discussed this... While doing so, I found this thread for an axim user that had similar problems (I know this is in the Ipaq forum)...
http://www.pocketpcthoughts.com/foru...ic.php?t=22779
They do refer to an app for cleaning up the db there.