I use a number of different forums, which themselves use a variety of software at the back end. OM is the *only* forum I have continual issues with.
Just now, as I often find, it's sloooooooowwwwwww. If I have multiple tabs open on the forum in IE8, then OM uses a straight 100% of my PC's CPU.
My suspicion is that it's using ads that are not simple images, but flash and such, and that there is waaaaay too much client-side activity going on. The web is supposed to be all about thin client...
Please, please, OM staff sort the stuff out!
/rant 