Originally posted by: hevnsnt
Open Firefox 1.0 and type about:config in the address bar
1. Find
browser.tabs.showSingleWindowModePrefs and double click on it so it = true
2. Find
network.http.pipelining and double click on it so it = true
3. Find
network.http.pipelining.maxrequests doule click on it and change it from 4 to 8
1. Then enables advanced tab options in your Tools/Options page

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2. This enables option #3.
3. This makes FF use 8 threads to each page.. Bascially, if you thought FF was fast before, try it after this.
I-Hacked Mirror link for Firefox 1.0 Final
Here