Try your browser with the weird and wonderful Acid3 test*!
IE6: 12/100
IE7: 12/100 (maybe this is running in IE6 compatibility mode??)
Firefox 2.0.0.12: 54/100
Firefox 3.0 beta 4: 68/100
Safari 3.1: 75/100
Apple WebKit nightly build r31157: 93/100
How does your browser of choice rate?
* The Acid tests attempt to prove how well your browser copes with CSS, the system that provides advanced page layout features to web sites.
Safari 3.0.4 (Mac Pro Dual 2.66): 40/100