If you've ever installed a Firefox add-on, you've probably encountered a pop-up window like the one pictured here, which tells you to wait a few second before hitting the install button. For a long time, we thought the delay was because Firefox was busy downloading the file, but you know what? Most Firefox extensions are tiny. It doesn't take very long to download them.
No, the delay is actually so that your computer won't wind up running arbitrary code when you click on something that you only thought was an add-on. But if you only install add-ons from trusted sites (and have a backup of your profile), you can disable the delay dialog.
All you have to do is type "about:config" into your address bar to bring up the advanced configuration screen, and search for the security.dialog_enable_delay setting. Then change the value to 0.
Again, keep in mind that Firefox implemented that delay to keep your computer safe. But if you're too busy to wait three seconds, this trick will help you regain a tiny fraction of your day.
[Via: Lifehacker ]
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