Sigh, if you have a custom repeating weekly calendar entry that started before Feb 29th, you should check to see if they're repeating correctly in MobileMe. It appears that there's another MobileMe bug where custom repeating weekly calendar entries don't work right with February 29th. To reproduce: create a new, all-day calendar entry on Feb 1st. Set the repeat to "custom", the frequency to "weekly", and the repeat to "2" (two weeks). Now, if you look at the calendar, the entry repeats, but the repeat becomes wrong after Feb 29th. Grrr.