Why does Firefox start multiple instances of itself every time I start it?
When I first start Firefox, and open the Windows Task Manager, I usually find THREE instances of it running. If I try to shut down all but one of them, they will either restart themselves, OR they will all close. Resatarting Firefox does NOT restart three again. Just the first time. Also, I get messages from the system that Firefox is using a LOT of cpu time and resources when I get the multiple instances. (This is how I discovered it was happening.)
This does not happen on my other machine, and both are running Win7 64bit and identical ( I thought) setups of Firefox.
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One possibility is Malware.
Firefox will open plug containers, but normally will not run multiple instances of Firefox. Running multiple instances is normally expected if an advanced user is using the -no-remote option
- for more information on possible causes see http://kb.mozillazine.org/Firefox.exe_always_open#Legitimate_explanations_for_the_symptoms
Can you actually see these three instances and look at them from the taskbar ?