Firefox 5 was just recently released and I love it! The hardest part is finding the new features and possibilities in the new versions.
One item I found that was a carry-over from the firefox 4 days was hardware acceleration. In the beta versions of FF4, you could enable acceleration, but it was unproven. In theory, this was rolled up into the new versions, but I found some improvements were still possible.
First, go to http://demos.hacks.mozilla.org/openweb/HWACCEL/ and run the acceleration demo. This will give you a baseline of your current configuration.
Then, enable accelerated graphics: From http://www.addictivetips.com/internet-tips/enable-firefox-hardware-accelerated-graphics/
- Enter ‘about:config’
- Click through the warning, if necessary
- Enter gfx.font in the ‘Filter’ box
- Double-click on ‘gfx.font_rendering.directwrite.enabled’ to set it to true
- Below this, right click and select New > Integer to add a pref setting
- Enter ‘mozilla.widget.render-mode’ for the preference name, 6 for the value
(To disable, set gfx.font_rendering.directwrite.enabled to false, delete mozilla.widget.render-mode, then restart.)
Finally, go back to the acceleration demo and see the differences.