konqueror passed all the tests while firefox flunked many!
Firefox: From the 43 selectors 26 have passed, 10 are buggy and 7 are unsupported (Passed 357 out of 578 tests)
Konqueror: From the 43 selectors 43 have passed, 0 are buggy and 0 are unsupported (Passed 578 out of 578 tests)
You can test you own browser at http://www.css3.info/selectors-test/test.html
Hmm... Now I remember somebody told me a few years ago that Konqueror is a better browser...Okay...point noted