I just got this new 3gs yesterday, so it requires the thethered jailbreak. As if that werent annoying enough, after jailbreaking I am noticing that the screen sometimes goes completely 'insensitive' as my girlfriend would call it. Basically, usually within 10 seconds of unlocking, the screen will completely ignore any hand motions. Usually a lock/unlock fixes it, but boy is it annoying none-the-less.