I'm fairly certain that someone else has posted this note about performing a factory restore on the X if it's not acting right.
http://forum.androidcentral.com/motorola-droid-x/36979-bingo-i-finally-figured-out-how-get-things-straight-my-droid-x-2-2-update.html
My phone updated without any problems other than the speed dial issue that has been well-documented. And I've looked at my text messages high and low and I swear, I CANNOT find any thing out of date or off-time. I have nothing to lose by claiming this, so if you think I'm lying, flame away.
Anyway, I'm getting off of the original point of this post. The link I'm providing points to a page that describes how to do the factory reset without the phone automatically restoring the original data and setting that might be causing some problems. I had no reason at all to think that my X wasn't working as fast as it was supposed to and I rocked along for a week, thinking it was fine. However, I ran across this post in my geekboy reading travels across the internet. I got curious and tried the reset, following the procedure as outlined in this post. And yes, it is indeed an improvement in performance. I'm anxious to see how it does over the next couple of days with regard to battery life, but for the last hour, I've been playing with it and it works even snappier and livelier than it did before I did the post-update reset today. And battery life had shown some improvement before this reset, so I dount I'll see much difference there.
As I said, I've seen this procedure posted already around here somewhere, probably more than once. Wildman, perhaps? At any rate, I do with they would make a sticky out this information as it might be helpful (notice the emphasis on "MIGHT") to someone having trouble. If you are an X owner with problems and you are also a rocket scientist or you've written software that cures cancer or feeds the hungry, then this might not be of interest to you and I'm sorry you wasted your time. People like me (that don't work for Verizon, by the way) throw these little nuggets out in hopes that they will be of some help. If not, well, we tried.
Good luck,
Geri O