I know this has been answered, but I'm still trying to understand why checking the backup/restore option (after all the of the steps are followed) would cause harm or cause the phone to be buggy again.
Logically, wouldn't all the backup data from 2.1 be erased? (when checking and unchecking this option the system asks if you're sure, otherwise all backed up data will be erased)
So by checking off these options (Back Up My Data/Auto Restore), wouldn't it take the 2.2 data in case you had to restore at all, for let's say a future Droid X update??
Hope that was clear for someone to answer.