Understand that the PowerPC G4 processor is pretty damned slow by today’s standard. Playing a Flash video while downloading e-mail generally turns the video into a slide show and makes any interaction with other processes a slow ordeal. Firefox 3 always ran a bit shitty on that system thus I wasn’t impressed. TenFourFox on the other hand ran pretty well for a modern piece of software ported to an ancient system. All my Firefox add-ons (NoScript, Certificate Patrol, LastPass, and Xmarks) work just find in TenFourFox and every webpage I visited appeared to render correctly. The browser’s performance wasn’t noticeably different than Safari’s which was a big plus. Overall I’m very impressed with what the team working on TenFourFox has managed to accomplish.