Google homepage has suddenly gone double size font, and the listings. Just google, open up any other website in the same browser - absolutely fine. Why? Is it just me?
I can't be absolutely certain, but it sounds like your text size was changed. You can change this in a number of ways depending on the system, Google themselves have a help article on this;
It should be changed on all sites though, worst case scenario though you can use the scroll button on your mouse (or ctrl + and ctrl -) to change the size when you're on the google page. If you've got any odd addons in IE (including Google Toolbar which I'm not fond of) disable or uninstall them. I'd also try upgrading to IE 7, I've been using it with no problems almost since it came out.