Overloading your calendar?

[badchad]

This may be a silly question.

In the last two days, I have found that when I attempt to load the stock WM calendar, the program loads, but then freezes.

I hard reset my ppc and the problem goes away. HOWEVER, if I hard reset, then sync, the problem immediately returns (e.g. if I open the calendar in "week view" and I attempt to scroll through appointments, the calendar freezes).

Because this happens immediately following a hard reset + syncing, it seems to me that SOMETHING syncs between my PPC and the my desktop to cause the lockup. Any ideas? Is it possible that I have too many appointments (past and present) overloading the calendar? if so, how can I delete my past appointments to free up space? Any help is appreciated.