We already warned you, but it might be the right time to remind you again that iPhone 4S and iPad 2 owners should update to iOS 5.0.1 asap, should they want to be able to jailbreak, when that A5 jailbreak is released.
According to recent reports, the Corona exploit has been patched in iOS 5.1. This means the upcoming jailbreak will probably work on iOS 5.0.1 only, and if Apple released iOS 5.1 before the jailbreak is released, then you might get out of luck and unable to jailbreak. BigBoss explains: