3.1.2 Update could be a hassle for JB, but welcome for fixes
Yes, it is a hassle, I know I just jailbroke my 3G iPhone a week or so ago.
Trust me though I have the sleep unable to wake power management issue, it is a big hassle now, so a fix is welcome.
Let's hope that the dev team tells us that apple didn't have time to fix the jailbreak exploit in this most recent 3.1.2 and we can upgrade without losing the jailbreak if we are on a 3.1 jailbreak (fingers crossed).
I think this was the case with going from 3.0 JB to 3.0.1.
Dev Team you are awesome, please let us know!
I could not imagine not having a JB iPhone without: Backgrounder, 3G Unrestrictor, SBSettings, and Kirikae.