Sometimes I get a message on the task bar at the bottom of the screen saying Firefox is using too much memory and the browser slows down terribly. What do I need to do?

Question

This has been happening for several months now.
I use AVG anti-virus and it runs both updates and scans regularly. I do find that if I do an extra full scan it improves the situation for perhaps half a day.
Sometimes the fault slows down the browser so much that it times out and I have to click the retry button.
It seems to happen with most sites that I visit, I have been unable to identify any particular one as being worse than the others

Answer 1

If you want to reduce memory(60%) '''when firefox minimize[only in windows os] '''there is an easy old good trick:
type in the address bar '''about:config'''
then press the button '''i'll be careful i promise'''
then '''right-click''' anywhere in the list of preferences and choose '''new''' > '''boolean'''
then type in the open window '''config.trim_on_minimize'''
then click''' OK''', and in the next window select '''TRUE''' and click '''OK'''.
exit firefox and restart-it.
'''works only in windows os'''
see for more info :
[http://kb.mozillazine.org/About:config About:config]
[http://kb.mozillazine.org/Config.trim_on_minimize Config.trim on minimize]
thank you
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