I got my Bold last Saturday and downloaded the facebook application tonight. I decided to delete it because I didn't think it was worth it. It said it needed to restart, so I let it and then a million things were no longer there. Among these things were my e-mail buttons (though my e-mail is supposedly still there), my profiles (yes, I can't set it to vibrate, etc.), my text messaging button, and a few other things. Facebook is indeed no longer on there.

What happened and how do I fix this?

Pull the battery while powered on and reboot the device again.

How did you delete the FB app? At options > advanced > Applications? What else did you delete?

Nothing else should have been affected.

That's exactly what I did. I deleted nothing else. I'll try the battery thing.

The battery thing worked. Hmm... Maybe I did something while it was starting up again.

Thanks very much for your help!

Facebook is a problem child for many BBs. They don't seem to like each other very well and are very difficult to get play nicely together.

You're welcome... powered on battery pull reboot FIRST thing for any glitch on a BlackBerry.