FlyerTalk Forums - View Single Post - High CPU Utilization by Firefox 2.*
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Old Feb 9, 2007 | 9:09 pm
  #17  
alect
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This thread was timely as I had noticed that FF was using up usually 120mb and up to 160mb of memory (no CPU issues for me). Now I understand when I open many tabs, but when I close them the memory usage doesn't drop.

So I uninstalled unused extensions and disabled ForecasFox but this didn't seem to help.

Then I found this which did the trick - http://www.freerepublic.com/focus/f-.../1327586/posts
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