inerd

Let me give you a quick fact about firefox first. >>Source

Firefox 3 Reaches 20 Million downloads in 7 Days, Opera - 4.5 Million Downloads in 5 Days

Open Firefox 3, Hit Ctrl+T and type “about:config”

1. Disable Extension Compatibility Checks
extensions.checkCompatibility = False
extensions.checkUpdateSecurity = False

2. Location Bar (Set number Auto Complete URL at Address Bar)
This is good for trimming down the huge auto complete bar, the default is 12
browser.urlbar.maxRichResults = #

3. Stop Displaying Favicons.
browser.chrome.site_icons = False

4. Disable Prefetch (Helpful for frequent Google searcher, low-speed internet connection or low RAM)
network.prefetch-next = False


5. Extend Spell check to forms
layout.spellcheckDefault = 2

6. Speed Tweaks
network.http.pipelining false to true
network.http.pipelining.maxrequests 30 to 8
network.http.max-connections 30 to 96
network.http.max-connections-per-server 15 to 32
network.http.max-persistent-connections-per-server 6 to 8
network.http.pipelining.ssl false to true
network.http.proxy.pipelining false to true

7. Disable Annoying Things that The Browser Does
dom.disable_window_open_feature.menubar
dom.disable_window_move_resize
dom.disable_window_open_feature.titlebar
dom.disable_window_open_feature.titlebar

Set all to false

8. Disable Delay Time While Installing Firefox Add-on (My favourite)
security.dialog_enable_delay = 0

If some thing should go wrong, you can restore defaults by clicking on the drop-down menu in the right hand top corner and pressing “restore to defaults”.