I have experienced several apps crashing since the upgrade. My NFL Sunday ticket will not stream games and crash, ESPN will crash sometimes, and several other apps. My screen will constantly adjust brightness on its own. The phone will sometimes freeze in apps and I have to do a hard reboot. iCloud says its constantly restoring and its been more than three days since I upgraded, yes it says this even when connected to wifi over night. I had to go into iTunes and manually transfer my music over to the phone after I stopped the iCloud restore. Siri does not work all the time. When I push the home button Siri opens but nothing happens. Honestly the list goes on. Has anybody experienced a major FAIL so far with iOS 6? I'm not talking about Passbook or maps, but with the way the phone operates in general?