Looks the same as always to me ... I'm using IE6 on Win98se and I keep the text size set to "larger."
Come to think of it there's an option in your user control panel here ... yes, I have mine set for "large print." Since you already checked your browser settings I bet that's it. Go to your user control panel, click on Edit Options, and near the bottom of the page you'll find Style Set. I bet that got screwed up for you somehow.