I use Windows7 and Internet Explored 9 for everything else. I did have some problems earlier, but once I re-installed Windows life is good. I must have had a corrupted file, but it now that it is gone I can use just one browser and get everything just fine.
When I had a corrupted file all the browsers had problems. So you might just need to re-install (this is not that hard) and see if that fixes the problem.
Hope you get it fixed.