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Tried to upgrade from firefox 3.6.2 to 3.6.3, error message says another instance of firefox is running, then 3.6.2 opens. This occurs when i start firefox after restarting the computer, or when i try to install the upgrade

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Whenever i try to open firefox, i get a message that firefox cannot install the upgrade because another instance of firefox is running. Then firefox 3.6.2 will start. running windows 7 64 bit. This will occur every time i try to open firefox, after rebooting or any time i close it and reopen firefox.

This happened

Every time Firefox opened

== I Ok'd the upgrade from 3.6.2 to 3.6.3