add:  cr.unregisterFactoryLocation(GENERATOR_CLASSID, location);  cr.unregisterFactoryLocation(PERSON_CLASSID, location); 
context:   unregisterSelf: function(cm, location, type) {    var cr = cm.QueryInterface(Ci.nsIComponentRegistrar);    // Feed Processor    cr.unregisterFactoryLocation(FP_CLASSID, location);    // Feed Result    cr.unregisterFactoryLocation(FR_CLASSID, location);    // Feed    cr.unregisterFactoryLocation(FEED_CLASSID, location);    // Entry    cr.unregisterFactoryLocation(ENTRY_CLASSID, location);    // Text Construct    cr.unregisterFactoryLocation(TEXTCONSTRUCT_CLASSID, location);  },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/56f7c72f9ec193aa0e9e15588d508d02895cb385/FeedProcessor.js/buggy/toolkit/components/feeds/src/FeedProcessor.js