I am a devout Anti-M$ person.
I only use Windows as a development platform (when necissary) and as a game OS. Other than that, my other two computers are a Macintosh G4 dual 800Mhz running OSX Panther (Best operating system in the world), and a Fedora Core 2 Box.
I run Firefox on all these computers and have been since the initial alpha releases
I think it is simply the most fantastic creation of all time. A further testament to the power of OpenSource and the lack of inovation on M$s side.
As i have allways said, they don't make great products, but they have world class marketing. (kinda like George Bush
)