Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1C28 Safari/419.3) I've had my unlocked iPhone for a couple of weeks now (1.0.2) and I've not turned the phone off since I got it. Everything seems fine and the phone is as fast as ever and hasn't crashed. Safari and iPod player have quit a couple of times. How long have you had your phone on for without turning off? Do you need to reboot every so often to keep the phone running fast and smooth? I came from a Blackberry 8300 and I never turned that off or rebooted it for 2 months and it also ran fine.