eproulx, have you checked if the data made it up to me.com? If it made it up there, try resetting your sync data by accessed your MobileMe system preferences, clicking to the sync tab, then to Advanced in the lower right hand corner. Click on the Reset Sync Data button and tell it that you want to replace the calendar data on the computer with what's on MobileMe. It goes without saying that you should backup your iCal information via the File menu to a database file on the system so that you can restore it if need be. If resetting the data doesn't work, there could be something wrong with your iCal application or the SyncServices data on your system.
