Noticed that on 2.2.1, your iphone will freeze randomly, and you wont know it till you try to use it. Ive had this happen 3 times, where i take out my iphone, and the phone is stuck on a dead black screen, if you try to turn it on maybe thinking it just turned off, it wont work. You have to do a hard reset for 10 seconds, then only the apple logo will come up. Today when i was leaving class and walking to my car, this dude just quickly walks up to me, and gets close fast and says "My phone wont turn on", he didnt have his phone out yet so im like, is he gonna try to stab me, or just steal my phone!? Takes his phone at, and has the same problem as me, so obviously its not just my phone.