Same thing happend to me! Factime actually worked for 2-3days (after jailbreak+unlock)then it wouldn't let me activate anymore with Limera1n. Now i installed greenposi0n and the facetime button is gone completely!!!! I really don't want to buy mitime, b/c i saw facetime working for 2-3days after jailbreak+unlock...theres gotta be a way.
Oh no, I hope I wont have to start doing that restore every week thing again.
I always had problems with facetime going down and not activating out of the blue.