Thumbs Down Internet Explorer 8

Has anyone else had severe problems browsing after upgraded to IE8? My computer wouldn't load 80%-90% of sites after I upgraded - it was driving me NUTS. Just removed that update and surfing has been smooth ever since. From what I've read, the new version is so far ahead of most websites' programming and security that the sites cannot be viewed. I can understand being ahead of the curve but geezu. Of course, IE8 could just totally suck and Microsoft doens't want to admit it - ha ha! Either way - my advice is DON'T upgrade.