If you haven't heard, Shiretoko (http://www.latko.org/downloads/) is the codename for internal builds of Firefox 3.5. If you are running an Intel-Optimized version of this browser on your Mac then you've probably seen those annoying errors that say "This web-site is incompatible with your browser". Those errors are truly annoying and they prevent you from viewing the intended web-site, well here's an easy fix!
In Shiretoko's location bar, type about:config, proceed if you see a warning dialog...