APC Magazaine just publish an interessting article about web browsers performance :
Oh sure, the following tests aren’t as scientific as putting all the browsers in a ring and seeing which one is left standing after the fight, but it’s close.
... Well there’s a nice surprise! Even the aging IE6 bundled with Windows XP is a fair bit faster at the testpage than Firefox and Opera.
Take the test yourself at scragz.com
If you are more interested in web standards throw your browser through the Acid2 test.
Read the article at www.apcstart.com