iPhone jailbreak stuck at "Waiting for reboot"

I tried going to 3.0.1 from 3.0, using redsn0w and its developers' suggestions. I updated to 3.0.1 through itunes, and tried to JB with redsn0w 0.8 and the 3.0 ipsw. The jailbreak kept getting stuck at "waiting for reboot".

I just removed the USB cable from the iPhone and reinserted it back at once. It worked, the jailbreak was succesfull - I tried this with two iPhones and I had the same problem which got solved with the same solution.

Although this worked for me, there are no guarantees it will work for you; I bear no responsibility if you break your iPhone!