When you load a new page, if your mouse is over the Home/Forum/Members etc area where a drop down menu appears, you receive an "Operation Aborted Error" under IE6 and 7 and Page Can Not Be Displayed.

I always receive the top section first before the forum loads as I run a local Squid proxy.

Small annoyance I have noticed for many months now, doesn't really annoy me, but others might be.