I'm getting thousands of errors per day in the Error Console; e.g.: Warning: reference to undefined property CLC_PeekMutationNotification().politeness Source File: chrome://clc_firevox/content/clc_sr_DOMMutationAnnouncer.js Line: 189 Error: CLC_Window().document.body is null Source File: chrome://clc_firevox/content/clc_sr_eventAnnouncer.js Line: 122 Warning: reference to undefined property a[f] Source File: http://gfx3.hotmail.com/mail/15.4.0327.1028/fullex.js Line: 1 Warning: reference to undefined property this.ad[a.streamId] Source File: http://www.google.com/reader/ui/485118933-en-scroll.js?hl=en Line: 877 Warning: reference to undefined property Ci.nsIWebProgressListener.NOTIFY_LOCATION Source File: chrome://google-toolbar-lib/content/toolbar.js Line: 115 Warning: anonymous function does not always return a value Source File: http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.0/jquery-ui.min.js Line: 42, Column: 83 Source Code: entClickEvent){b._preventClickEvent=false;c.stopImmediatePropagation();return false}});this.started=false},_mouseDestroy:function(){this.element.unbind("."+this.widgetName)},_mouseDown:function(d){d.originalEvent=d.originalEvent||{};if(d.originalEvent.mou Warning: reference to undefined property this.ad[a.streamId] Source File: http://www.google.com/reader/ui/485118933-en-scroll.js?hl=en Line: 877 Warning: assignment to undeclared variable tbls Source File: http://support.mozilla.com/minify.php/js_main Line: 143 Warning: reference to undefined property this.subpagesById_[b] Source File: chrome://google-toolbar-lib/content/toolbar.js Line: 2520 The first two errors seem to be the ones that are causing ML-FireVox to loop and speak endlessly. Stop key sequence does not permanently stop the speaking.