Upon booting up my computer this morning, a McAfee popup window presented information inre changes to the "Siteadvisor" plugin.
Now, when I select ANY of the menu options from the siteadvisor icon, a popup window displays that appears to be not only non-functional (when clicking on anything), but impossible to close except by closing the browser itself (IE7 in my case).
BTW, I'm using the McAfee service provided by Comcast and I installed "Siteadvisor" as a separate installation.
if your mcafee security center is working properly i think it's better not to uninstall and reinstall.
since siteadvisor is working with mozilla firefox, i think this could be a browser issue... try resetting your IE browser and turn back on the plug-ins... also try updating the browser... please don't upgrade to IE8 beta as it creates problems for mcafee... 🙂