Just had my 4s delivered this afternoon. Set up as new when I turned it on and have yet to connect it to iTunes. Previously had a jailbroken 3gs on 4.3.4. However ran into fair few problems with it, it was unstable and was unable to restore. As it was a tethered jailbreak, my 3gs was never turned off for, well, over a year. Now do I jailbreak the 5.1.1 or upgrade to iOS6? How stable is the untethered jailbreak for 5.1.1?