If you’re anything like me you probably test a few Firefox extensions every week, meaning you’re familiar with the extension installation dialog that makes you wait for a few seconds before actually installing the extension on your browser. Though there are security reasons for this delay (it’s meant to prevent malicious software from installing on your computer without you noticing it), the truth is that after having to wait for it a dozen times, you end up hating that darn dialog. I did, so I decided to do a quick search and found the trick to disable it.
Enter about:config in your address bar and then use security.dialog_enable_delay in the filter field to locate the exact text string. Double click on it and enter “0” as the new value.
From now on, you won’t have to wait when installing new extensions. Just some sensible advice: always install extensions from reliable sources, and do not overload the browser with extensions you don’t really need or use anymore.
