Motorola has acknowledged the complaints of a number of DROID X owners who have upgraded to Android 2.2 and are experiencing "issues" related to the update. Some of the issues are minor, but a couple (failure to boot, kernel panic) are definitely not. Motorola is saying the bugs have been squashed, but the fixes will be incorporated into a yet-to-be-announced "future software release." Here's what a Moto employee on the DROID X support forum had to say:
If you have already upgraded to 2.2 for Droid X, you have found some new capabilities.