I have been experiencing some issues with the myTeamSpeak synchronization now and then.
I don't know what causes them (some connection error probably) but I cannot turn the notification OFF in anyway but disabling the sync. But then if I start the program without the sync all my previous setups and bookmarks are gone.
Error comes as a system notification in the lower right corner of the screen and it gives the default windows system message sound and it's really annoying.