Wifi shuts off by itself for no apparently reason. When you go back into the options it kicks back on. Kind of annoying!
Install Insomnia if you want it to stay up. How do you know this is a pwnage bug and not standard 2.0.1 or 2.0.2 behaviour?
This isn't a bug.
My iPhone has done this since last year when I was on 1.0.2.
Wifi stops working when the phone goes to sleep. It kicks back in when the phone is woken up or it needs to auto-check emails.
My fault then, i am new to the iphone and didnt notice it before. It is annoying as all hell though.