Can anyone please confirm whether the above method would work? I am guessing it would simply stop future syncing but would not remove existing entries. Before I do any syncing, I want to know that it is possible to reverse the decision without having to manually delete each entry. Contacts and Calendar entries are of a very personal nature, and the lack of existing security to protect these data or a method to remove them completely is perplexing. I am always lending my device to colleagues/friends who want to use a certain application/game, but I don't want to disclose my personal info.