add:  catman = Components.classes["@mozilla.org/categorymanager;1"].getService(Components.interfaces.nsICategoryManager); catman.deleteCategoryEntry("mailnews-accountmanager-extensions", "@mozilla.org/accountmanager/extension;1?name=newsblog", true); 
context:   unregisterSelf: function(aCompMgr, aFileSpec, aLocation)  {    aCompMgr = aCompMgr.QueryInterface(                 Components.interfaces.nsIComponentRegistrar);    aCompMgr.unregisterFactoryLocation(this.mClassID, aFileSpec);  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/18cfec8ad27905dd40539b675245ea9a8b133b42/newsblog.js/buggy/mail/extensions/newsblog/js/newsblog.js