There seems to be an error with the logout link at the bottom of the main forum. When I click it takes me to a page that says: "An error occurred while attempting to log you out. Click here to log out (http://www.sciforums.com/login.php?do=logout&u=15278)."

The difference in Logout links appears to be that the link at the bottom of the main page is just:
http://www.sciforums.com/login.php?do=logout
While the link that works on the error page is:
http://www.sciforums.com/login.php?do=logout&u=15278

A user number is added.

u2 huh?

Just delete the old cookies.

I never log out. SciForums always remembers me when I come on. It's like I'm someone famous. "Welcome to SciForums, Athelwulf. Would you like some champagne?".

It's nice. :D

Just delete the old cookies.

Interesting. That works... once. But, you'd have to delete the cookies each time before logging out. Which would be more of a hassle than just going through the second logout screen.
Strange.