Thanks to the unholy mess that is desktop integration with the SGS2 (and possibly with all Android phones for all I know), my calendar is a complete dog's breakfast with multiple entries, multiple spurious calendars etc. The calendar on my Mac is fine so I would like to delete all my calendars and everything in them so I can re-sync. Going to Settings->Applications->Manage applications->Calendar and tapping on Clear data appears to have done nothing. I read elsewhere that I should manually delete com.android.providers.calendar but I cannot find it and the only file manager I have that does real search (File Expert) keeps FCing on me. Can anyone help please? [Edit] On further investigation, it appears that com.android.providers.calendar is the application itself, so deleting this probably isn't a good idea. Some (Android, not specifically SGS2) users appear to have a Calendar Storage application, the data for which can be cleared, but I am not one of those as far as I can tell.