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When I am not using Firefox there is a firefox process running anyway. Why?

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When I run firefox I have 2 processes running. If I end the process with the smallest mem usage, it will start again in a few seconds. I uninstalled firefox and reinstalled it but it didn't fix the problem. I discovered this when I tried to do and update recently and the install program said it couldn't complete the update because firefox was already running.

When I run firefox I have 2 processes running. If I end the process with the smallest mem usage, it will start again in a few seconds. I uninstalled firefox and reinstalled it but it didn't fix the problem. I discovered this when I tried to do and update recently and the install program said it couldn't complete the update because firefox was already running.

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Please read this article to see if it helps:

http://kb.mozillazine.org/Firefox_hangs#Hang_at_exit