Pasting an URL causes redirection to the forum index

Hey WPMU,

I'm not sure when this started, but pasting a naked URL now causes the forums to error out. That's fine, I'm happy to wrap an URL in a link tag. I'm not happy to get a redirection to the forum index when it happens, because that means I lose my ENTIRE POST when I hit the back button.

Can you confirm replication on this behavior or is it just me?