It's been reported on several sites, just thought this would be handy if you're trying to get into any of your favourite blogs - it seems to be a problem with IE7 and Sitemeter.
Hopefully someone's sorting it out.
Firefox and Safari will work OK.
Download one or other from the Web - search using google for whichever one you want. Firefox is the most formatted like IE and will be familiar. Safari is 'neater', but different in format and facilities.