Someone else on another board I use was having speed problems with a couple of sites he uses, so downloaded FasterFox (For your Firefox Browser).
So after hearing him gushing on about it and how it had helped I downloaded FasterFox for the Firefox browser. Things have sped up a lot!
If you want to try it:
http://fasterfox.mozdev.org/There is a warning for enabling enhanced pre-fetching...but other than that, I am pleased (so far).
I also love the little speed load indicator that appears in the bottom bar! Really enables you to compare the speed times on various sites.