Mozilla released Firefox 3 Beta 5 today, this new beta features more than 750 changes from the previous beta and should offer more stability, better web compatibility and more performance.
Firefox 3 Beta 5 includes more than 750 changes from the previous beta, improving stability and web compatibility, providing platform and user interface enhancements, and resulting in the fastest Firefox ever. Many of these improvements were based on community feedback from the previous beta.
You can grab the new browser over here. The full changelog can be read here.