Got the JB update yesterday (EDT). So far, the phone works great. the update even helped me solve a nagging problem...OK, by causing a few of its own; but, still. So here's the deal: When my phone is connected to my computer, suddenly the phone uses bizarre tones for rings and notifications. It didn't used to do that before. The phone has of late been doing strange things when I take it off the computer; I get notifications that it's preparing internal storage and the SD card, which it never used to do before; and that started before the JB update. So I tried copying the ringtones via computer from the SD directories to the internal directories; then I rebooted the phone. Sometimes the proper ringtones are listed; sometimes I hear some very weird stuff. Any idea why this might be happening? Thanks, all.