I just upgraded my iPod touch 4th generation 8gb white to IOS 5.1.1. Now when the brightness is turned all the way up, the lock screen is very bright as it should be and then, i slide the unlock thingy and it goes to my home screen and goes very dark. this also happenes with my IOS 5.1 iPhone 4 that is getting replaced on sunday. but when on iOS 5.0.1 on both it was fine, on iOS 5.1 on iPod it was fine. houuld i restore???