A week ago Firefox crashed and since then will not run on my computer. At first when I clicked on Icon on desktop a popup said Firefox was already running, but where was it? I couldn't find it anywhere. I uninstalled Firefox and downloaded Firefox 9.0.1.

Now when I click on either the desktop icon or Firefox in the program section, a little popup appears in the top left hand corner but there is nothing in it that I can click on to run Firefox

There may be a parent.lock file left in the Firefox Profile Folder because Firefox crashed.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
See:
*https://support.mozilla.com/kb/Firefox+is+already+running+but+is+not+responding
*http://kb.mozillazine.org/Profile_in_use

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