I followed iclarified.com and unlocked my iphone 3g today using PwnageTool 3.0 and UltrasnOw. I just realized that the iphone sometimes doesn't receive incoming calls after the unlocking and the sensitivity of the screen is not as smooth as before . I tried to turn it off and then turn it back on, the problem still exists. So what should I do for it? Thx for the help!!!