In the URL bar type "about:config". This will bring up a list of commands and variables you can edit. Then type "network.http.pipelining" in the filter and change the value to "true".
After that type "network.http.proxy.pipelining" in the filter, similarly setting this value to "true" as well.
Next locate "network.http.pipelining.maxrequests" and change the value to "30." This should now make 30 requests at once instead of 1 for all the files in a page. This speeds up browsing tenfold! ( Edit this according to your connection speed. For 384k I use 30, so set yours accordingly.)
Lastly right click anywhere and select "New" then "Integer". Name it "nglayout.initialpaint.delay" and set it's value to "0". This will make the browser respond faster to the data required to load the page. "
It makes a huge difference for me.