Mozilla Firefox is a free fast, full-featured web browser that makes browsing more efficient. If you want to speed up your Firefox browser even faster, then Fasterfox addon will it.
Fasterfox allows you to tweak many network and rendering settings such as simultaneous connections, pipelining, cache, DNS cache, and initial paint delay.
Get Fasterfox 2.0.0 from mozdev.org [Fasterfox – performance and network tweaks for Firefox ]