Possible Duplicate:
How do I remove a website from Ubuntu’s web applications?
Using Ubuntu 12.10 with Unity.
I think I agreed to install a Launchpad add-on in Firefox the first time I visited the site (launchpad.net), and ever since then, whenever I have an open tab in Firefox with any page on launchpad.net loaded, an icon appears in my Launcher desktop widget. If I right-click on the icon and select quit, it also closes the tab in Firefox. I've since uninstalled the Firefox add-on and rebooted, and it's still happening.
How do I make it stop? It's so annoying
Screenshot:
