I feel Apple should include in the update part of settings an option to revert to the last OS. That way you could at least try the OS out and if it doesn't appeal to you or leaves your device unstable, which a lot of people have complained about, you have the option of changing back. At present it's a one way shot, and if the bullet hits you in the foot then you're left with a permanent limp, either that or go off the reservation by jailbreaking your device. This would avoid a lot of irate owners with older equipment complaining that the OS has slowed this action or that to a crawl. The iPad 1 can't update further than IOS 5 because the processor can't handle the strain, but the fact is it can't handle IOS 5 either, paint would dry quicker than using Safari for instance on an iPad 1 with IOS 5.