I took only the Mozilla changes, and I don't even have enough Linux skillz to edit the prefs.js file, so I made all of the changes by setting them right in the browser with about:config. It has really made a difference to page drawing and general browsing performance! Much gratitude for these tips, it has increased my enjoyment of my 810. I love many things about this machine, but browsing speed has always been a bit frustrating. The fact that Opera on my Blackberry 8300 could render pages faster, with comparable layout and functionality just seemed wrong! This has essentially sped up the 810 to be just about as fast. For any other noobs out there, the about:config method is incredibly slow (put aside 30 min to make the changes, the 810 will look like it has hung on each parameter update... hell, loading the about:config page will lock your machine for a few minutes) but it seems pretty safe and it works. Cheers