There might be some truth to the signal strength bit.... I was with orange - had to cut up the sim and found out that I'm affected Please Register or Log in to view images. Now I switched to t-mobile as I got a better deal, and the problem is gone. Just been holding the phone in my left hand covering the antena bit, and the phone is still showing 5 bars Please Register or Log in to view images (before it took like 15secs before I lost all bars). I'm glad it's better now and hope apple will fix it for the rest of you with a software update.