■ [Firefox] Firefox 3 beta 4 プロファイルを別にしてるので残しといたbeta 3からupdate。 [Improved in Beta 4!] Speed: improvements to our JavaScript engine as well as profile guided optimizations have resulted in significant improvements in performance. Compared to Firefox 2, web applications like Google Mail and Zoho Office run twice as fast in Firefox 3 Beta 4, and the popular SunSpider test from Apple shows improvement