Tools -> clear recent history,  may help

I have sometimes seen Firefox give such a message, and do not know the reason for this. As you mention Internet Explorer I assume you are using a Windows machine. Try using task manager to stop the firefox program. Shortcut keys [Ctrl][alt][del] in XP, all pressed together will get task manager. Another method is in Start -> Run keying in the command "Taskmgr" and hit Return Once TaskManager is showing click the process tab and look for "firefox.exe", right click on it and use "end process" that should stop Firefox without you needing to restart the computer. I am not sure why you need to use'' "c cleaner to remove unused items the browser saves on the computer "'' Tools -> clear recent history, may help You may also be interested in the [[Private Browsing]] feature. ---------------------------------------------------------------------------------------- ''I have just noticed someone else posting about this article that may be of interest'' [[Firefox is already running but is not responding. ]]