found this on another forum I use, thought i would share: http://www.waterfoxproject.org/ Specifically designed for 64 bit operating systems; Waterfox seems faster and more stable, especially with plugins, than the latest firefox builds. After flash crashing regardless of what browser I choose for the last week I went hunting for a fix, this is even better. Automatically runs off existing firefox profiles so all addons/themes/cookes/saved passwords/etc are available without any fuss or importing. Asides from stability it also runs previously laggy flash applications as smooth as hot butter. Highly recommended
Shame, doesn't seem to be for other platforms than Windows. Also the site's benchmarks show that it is significantly slower than normal Firefox in the V8 JavaScript benchmark, which is not good.