I was editing a contact synced by TBSync from a gmail account. I created a new note section and added some information that included ":" and newlines. After saving, only the first line was saved. I tried to edit again to add the information a few times without success, then the entire contact was wiped of information, but still existed. The blank contact can still be searched by the original name, so something still existed there. After a restart, the contact is completely gone. I created a new contact and tried to reproduce the problem by entering similar information, but had no further problem. Mostly, I just wanted to log this event in case others have the problem.