I actually just called Verizon about that this morning. Dude seemed surprised when he pulled my data logs and noticed how often my signal flucuates considering how many towers were around the areas I frequent. He submitted a ticket, for what thats worth, but I don't really expect a lot to come of it. If they've got my software version on record, I'm on the newest GB leak, so I'm sure they'll blame it on that, but its been going on long before I installed GB...course, my wife's OG Droid is stock unrooted 2.2 and its doing the exact same thing.
As of the last 3 nights, my phone (Droid X) as well as my wife's (OG Droid) have both completely lost data connections around 12:30AM EST. Its the weirdest thing. No normal fixes worked. Tried a battery pull on both, airplane mode on both, and updating the PRLs and even a reactivation on mine and just had to wait it out. Came back after about 45 minutes.