The ONLY sites that Firefox hasn't worked for me is WindowsUpdate.com and the KB search feature on support.microsoft.com.
Firefox supports all OFFICIAL web standards. IE does too, but it has all this proprietary Microsoft standards that it has too. Sites that use those UNOFFICIAL standards are the sites that wont show up right or work right with Firefox.
Next time you find a site that doesnt work right with Firefox, blame the website builders who have their kneepads on for Bill Gates. They should be building websites based on REAL standards anyway.
