Balloon-Juice is going through the rollout of an upgrade. Part of the upgrade messes up the back button. Whoever wrote the JS or whatever plugin is doing the magic grabs the back button to do smooth scrolling and such.

There's a Greasemonkey script that fixes that behavior. Maybe a similar script will fix whatever issue AP is having with your back button.

(Not that you have time to mess around with reprogramming your browser for a particular web site - I know I don't!)

Cheers,
Scott.