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two zombie instances of Firefox

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revans
revans
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I see two instances of Firefox running on my MacBook. I can see both instances when I try to switch to either of them with cmd-tab. But when select them (i.e., try switch to either of them with cmd-tab) nothing happens. Force quit does nothing. Neither appear in the Activity Monitor. In the terminal is used the ➜ ~ ps -ax | grep -i firefox 

6195 ttys001    0:00.00 grep --color=auto --exclude-dir=.bzr --exclude-dir=.cvs --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn -i firefox

The kill command cannot find the process. If I re-run the ps command the PID number changes.

I see two instances of Firefox running on my MacBook. I can see both instances when I try to switch to either of them with cmd-tab. But when select them (i.e., try switch to either of them with cmd-tab) nothing happens. Force quit does nothing. Neither appear in the Activity Monitor. In the terminal is used the ➜ ~ ps -ax | grep -i firefox 6195 ttys001 0:00.00 grep --color=auto --exclude-dir=.bzr --exclude-dir=.cvs --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn -i firefox The kill command cannot find the process. If I re-run the ps command the PID number changes.

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revans
revans Autor de la pregunta
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My question is: does this weird behavior suggest my MacBook has been infected with Malware?