I've already done that in IE...
Actually, I think I found the cause... I've added some pop-up code which is on a cookie so that a popup appears only every so many hours, and this was obviously screwing the rest of the boards up... Since I had the popup code in the header it loaded before all other cookies, and messed it up (I presume).
I removed the popup code from the header of all forums and now it seems to work... We'll see if it lasts.
