If you have an intel Mac, this might be a solution for you. I have tried it and it does work. It is a bit confusing to set up and work through but it works. You'll need to have X11 installed.

http://winebottler.kronenberg.org/

On my iMac, Seamonkey is faster that any browser i have used including Safari, although i use Safari exclusively

Try SeaMonkey, very good browser, very fast and customizable.