This is somewhat strange. i'm running a T-Mobile G1 with the most recent OS, i think it's Cupcake. Anyway i run aTrackDog every evening to see what program updates are available and update them. Yesterday after updating i plugged the phone into my computers USB port and after a couple of seconds the phone rebooted the desktop. i don't think it is a complete shutdown because i just get the Android screen and in a couple of seconds the phone is o.k. again and then it reboots again. If i unplug it, it will reboot the dt and is alright. i'm running the aTHome Console for a desktop and i think the only thing it updated was the SimCheckerLite. When the phone tries to connect to USB the top bar rotates 50% and stops. Any ideas as to what's going on? i'm going to uninstall the SimChecker and see if that fixes it. Have a great evening!