How can I keep Firefox from using so much memory?
June 1st, 2010 | 
Author: Lately I’ve seen it running at peaks of 1GB, even without having any tabs open that would use up so much(no videos, games, etc). Even when I close a few of them, it still runs at a high memory capacity. Is there any way to curb this high memory expenditure, or is this just how Firefox works in general?
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Firefox shouldn’t be running anywhere near 1GB. I recommend a virus scan or a system format.
What you should do is uninstall Firefox and reinstall Firefox; if doing this doesn’t work, you should switch over to the Opera browser. Opera, being renowned as the ‘fastest’ web browser in the world, is a definite must-have program.
Firefox should stay around or under 100MB most of the time. Try opening Firefox in safe mode, there should be a shorcut in the start menu for this. This disables all addons, and if u notice lower memory consumption then an addon is doing it.
If its still doing it in safe mode, it may be a problem with viruses or something. Try doing a scan with Adaware and Malawarebytes or uninstall and reinstall Firefox.