Untethered jailbreak for iOS 5.0 showcased on YouTube
 

Love to jailbreak but hate to tether every time you reboot? Then help could soon be at hand courtesy of hacker Pod2g. He just put out a video showing off a new exploit that continues to work on an iPod Touch even after it has been switched off and on. It appears to be running on iOS 5.0 rather than 5.0.1, so some downgrading might be called for. We don't know when it'll be released to the masses, or how long it'll last once Apple catches wind, but in the meantime there are of course various alternatives if you can stomach the risks and don't mind a bit of USB tomfoolery.

http://www.engadget.com/2011/12/09/u...ed-on-youtube/