Tried searching, but terms are too common...
Got a couple of contacts with names according to Google contacts, but it seems when I reboot, they get given their Facebook names - is this happening to anyone else or a known annoyance?
If it's anything like HTC Sense on the Hero, go to each contact, edit it, and there should be a 'facebook' item, either unlink them, then re-link them to facebook, it may give you some more choices when you do.