Periodic Crashing on iPad 2 iOS5

After I update my iPad 2 to iOS 5, the device is periodically quitting and restarting while using. Crashing occurs most often with Safari, but it also occurs in other apps. I disable all of the iCloud syncing options and reboot, no change.My wife has installed iOS 5 on his iPhone 4 without the issue. I try doing the reset, it still crashes. Then I connect to itunes using Mac and restore it to an