In the current nightly versions of Firefox 3 (pre alpha8) there’s an interesting new feature: a plug-in manager, accessible as a panel in the Add-ons window.
In this way users can manage their plug-ins, uninstall and disable them on the fly 
Technorati Tags: Firefox 3, plug-ins manager, pre alpha 8
even if it’s an interesting feature in nearly 10 years of web browsing I never had the need to use such a feature … so, who cares ?