One other thought.
Be sure you are using ProSilver for your board style. Other styles may have some problems. This is especially true for Internet Explorer which has so much proprietary screwies and does not follow the rules, so that special routines must be written for it to work.
I strongly suggest you Windows people explore other browsers. There are about 100 for the Mac, so I suspect there are more for Windows. Firefox is tops, I would also suggest looking at Opera which has some advantages. I predict (Tarot card confirmed) that IE will suffer more and more as developers get tired of coding specially for its eccentricities.
I use 6 different Browsers routinely, each for special features.