I did a soft reset yesterday in honor of National Pull Your Battery Day and when it came on, I had Facebook. I had 4.5 since around July 15 or 16 and have pulled the battery maybe once or twice. I'm not even on Facebook...so why would it mysteriously show up now? I also turn my berry off every night.
Posted from my CrackBerry at wapforums.crackberry.com
This is something with service books... apparently they got resent this past time during your reset and you got the Facebook app pushed to you from your books...
Yeah, the Facebook app link is just part of T-Mobile's service books. If you want it, but don't have it, just go to blackberry.com/facebook from your BB. And if you don't want the link, just delete the service book.