I have had a lot of wierd things happen to my BB's. Is it possible that your BB simply crashed? I go through extensive things to keep my BB form crashing: like the address book for one example; it actually helps to use the preloaded icons you can find in the media file in the place of the contacts that you don't have a picture of. Go to the media file and select explore and look for pictures then choose preloaded and check the icons and fill in the blanks. I have other wierd things that I can advise you on but that's just me :p message me if you'd like to hear 'em