Lately, probably after running some Firefox upgrade on my Ubuntu (9.04) machine, surfing has been very slow. Firefox has used a lot of resources and it has taken a very long time to open pages.
- open firefox
- In the adress bar type in “about:config”
- In the filter bar type in “ipv6”
- Double click “network.dns.disableIPv6” so that the value turns to TRUE
- Restart firefox
This helped my browsing quite a lot and you might give it a shot if you experience slow browsing in Firefox.
Edit: Adding the Flashblock add on my further speed up loading of pages with a lot of flash. Be aware that this add on blocks flash videos and if you want to see them you have to click on them.