Some things are better left untouched, and the iPhone lock screen is one of those things. Apple decided to make a shortcut to the camera on the lock screen as the default in iOS 5.1, instead of simply leaving it up to the user to double-tap the home button. The result is an off-center unlock slider that's awkward. BGR says it best:
I can't say it any better than that. I hope more people chime in so Apple will give an option to turn that off. What a major league bone headed play by Apple.
Apple, your new lock screen is terrible. It’s great that you want to make the camera even more accessible in iOS 5.1 since a lot of people didn’t know the double-tap trick, but you’ve compromised the usability of something as simple and vital as unlocking a phone. You have altered the iconic slide-to-unlock layout, and there’s no option to disable the new camera shortcut on the lock screen. Visually, an off-center slide-to-unlock mechanism isn’t appealing at all. It’s too narrow for the space and I’ve tapped the camera button by mistake more than a few times trying to unlock the phone. Give us a setting to disable this and bring back the old option of double-tapping the home button please.
I can't say it any better than that. I hope more people chime in so Apple will give an option to turn that off. What a major league bone headed play by Apple.