I picked up a NS 4G on launch day and so far it has rebooted itself 3 times. I've factory reset the phone once and the Youtube app (that said installed, but wasn't there) finally showed up, but it has still rebooted once since then. Anyone else had this problem? This is not during a phone call like the TMo version had...just using the phone. Combined with the low signal and not being able to find a browser I like real well, I may be returning it. Thoughts? Thanks.