Firefox refuses to shut down in task manager

Even with upgrading java and flash. Firefox 6 STILL refuses to completely shut down without restarting. When will you have the REAL fix ready? I have win xp mce and the current gurus have no idea what to do next

See "Hang at exit":
*http://kb.mozillazine.org/Firefox_hangs
*https://support.mozilla.com/kb/Firefox+hangs

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    * [[Firefox hangs]]

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