XPCOM:EventReceiver is not responding message on system shutdown
From MozillaZine Knowledge Base
This article deals with a program called "XPCOM:EventReceiver" not shutting down properly when Windows is shut down. This problem has been solved in many different ways for many different users.
Firefox itself
- Turning off Firefox's anti-phishing feature may stop this from occurring. Tools -> Options -> Security and uncheck "Tell me if the site I'm visiting is a suspected forgery". [1][2]
- Uninstalling Firefox, removing its installation directory and reinstalling may fix this problem. [3]
Extensions
Having certain extensions installed can cause this problem. If you have any of these extensions, disable them to see if they fix the problem.
- Google Toolbar[4][5][6] (also see Problematic extensions)
- Talkback (Quality Feedback Agent) [7][8]
- DOM Inspector [9]
Other software
This problem may be caused by other applications whose relation to Firefox is not clear.
- Google Desktop[10][11]
- Outpost Firewall - make sure the loopback connection is allowed[12][13]
- Video drivers - try updating or rolling back your video driver[14][15]
- F-Secure Internet Security 2007 [16][17] (German). To resolve the problem go to the settings: "AntiVirus & AntiSpy" - "Echtzeit-Scanning" - "Systemsteuerung" and remove the checkmark at "Systemsteuerung aktivieren". F-Secure Support claims[18] that the problem should go away with Internet Security 2007 - Second Edition[19]. This seems not be the case, however the configuration change still works.
Other causes
This problem may be a secondary effect of Firefox hanging. Check Firefox hangs for more solutions.