@balleyne If I were you I'd clean out my device and freshly start over [...] If you synced into the default N900 one, tap it, chose Delete which will throw security questions at you. Answer then to get the calendar purged since it cannot be fully deleted. If you created a separate calendar and did not sync into the N900 default one, delete that one. It will be marked with "synchronized". This as well will throw security warning at you, answer accordingly to get the calendar removed. Once done, recreate the MfE account. Now, in the final step before the initial synchronisation, set the calendar sync to create a new calendar and not to sync into the N900 default calendar. There is a button in the calendar sync details which lets you change the calendar and/or let the sync create a new one. Hopefully this will sort things out or at least keep you up to date without any worries for a couple days and/or weeks ;-)