Same problem. I tried to download jailbreak it, got stuck in reboot loop, went in recovery mode and recovered. I tried to find one for 2-3 hours but I had no luck.
You'll have to wait for an official Jailbreak to be released. A good rule of thumb is to turn off automatic updating and just don't update until Redsn0w or any others come out with a patch.
Just wait, it's a lot better.
Same thing happened to me awhile back and I had to wait it down since there was no way to downgrade from what I could find.