iOS 6.1.3 Beta 2 Has Been Released to Developers
Apple has just released iOS 6.1.3 beta 2 to developers recently. The version is rumored to have corrected the lock screen bug. The bug was rumored to have been corrected in iOS 6.1.2, but that only fixed the Microsoft Exchange bug. iOS 6.1.3 should be released to the public sometime in the next week or so.