I did a hard reset and my Defy started to reboot every minute or two. Very annoying. The fix is simple. FACTORY RESET THE PHONE AND CREATE A NEW MOTOBLUR ACCOUNT. 1) Begin on the home screen. Press the menu button and go to Settings. 2) Go to Privacy 3) Select Factory Data Reset. 4) Restart the phone. Don't use your old Motoblur account, the cache is corrupted and is causing the reboots. Create a new Motoblur account. This may not be the solution for every phone, but it will be for some. You may lose your address book/data in the process - it is a computer, EXPECT to lose your data periodically, and backup!