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Why does Firefox go into deep background and I have to close using Task bar manager?

Firefox
cor-el beantwortet
southporcupine
southporcupine

Far too often when I try to open Firefox I cannot but am told it is already running. The only way I can open is by opening the Task Manager and closing the Firefox process and there are often several processes running in what i call deep background.

Far too often when I try to open Firefox I cannot but am told it is already running. The only way I can open is by opening the Task Manager and closing the Firefox process and there are often several processes running in what i call deep background.

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cor-el
cor-el
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See http://kb.mozillazine.org/Firefox_hangs and Firefox hangs or is not responding - How to fix (Hang at exit)