If you haven't already try cleaning out your temp internet files and cookies. Doing this through Internet explorer does not always delete all these files so you may want to look for them manually if it doesn't help the first time. Disk cleanup may get more of these files but doing it manually is your best bet. Also make sure you are using the latest version of your browser (I use Firefox with no issues) and keep windows updated. And of course regular defraging will keep you running smoother as well.