Firefox 3: Allow Windows to Swap Memory When Application is Minimized

  • Open Firefox 3.
  • In the Location Bar, input about:config.
  • Click to get past the warning message that appears.
  • Right-click anywhere on the preference list.
  • Click New and select Boolean.
  • When prompted to input a New boolean value, input the following: config.trim_on_minimize
  • Select true for the value.
  • Click OK.
  • Restart Firefox 3.
Note
[] Make a backup of your prefs.js file before you start editing. Then, if something goes wrong, you can restore it by copying it over the corrupt file.
[] If you can’t restore via a backup prefs.js file, you can exit Firefox and issue the command firefox -safe-mode to bring up the Firefox Safe Mode screen. Then, just select Reset All User Preferences To Firefox Defaults. This will restore all user preferences to their default values.

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