My iPad 1 has been nothing but a pain in the proverbial since upgrading. I wish I'd stuck with IOS 4. Since the upgrade it only works when it feels like it. The sound, music, keyboard clicks, etc work intermittently. As I'm typing this I'm getting sporadic keyboard clicks. I also get annoying keyboard lag in Safari and Mail which I never got before. I tried all the usual resets and restores and triple checked my settings. But it still plays up. How can Apple release such buggy operating system??? I've gone right off their products!