Not a clue, however, FYI, I use GPE and google calendar which for the most part works. Plus, I never lose any appointments on google so when I re-move/re-install GPE (hey try anything to get it to work kind of deal) I get back to a usable two-way calendar. Lately, Erminig never completes, just hang at the end, however, everything is in sync so I have left it alone.

Sometime when I sync either things are off, EVERYTHING is (also like yours) gone, just a very small amount of appointments are off, then after I reboot and/or come back to GPE and/or re-sync, everything "is right with the world" again. Both on (N810) RX-44_2008SE_2.2007.51-3 and/or RX-44_DIABLO_4.2008.23-14....