I am now using Firefox 18 and notice excessive RAM usage. It is currently running about 400,000k when it should be around 150.
I have tried suggestions like disabling plugins etc, I have installed RAMback, and have made changes suggested to things within the about:config function. When I look at Task Manager in Windows 7, the RAM figure for Firefox seems to be increasing as I look at it, without me even adding / opening tabs etc.
So, what can I do now (I really don't want to use IE !!)
The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: This will cause you to lose any Extensions, Open websites, and some Preferences.
To Reset Firefox do the following:
Go to Firefox > Help > Troubleshooting Information.
Click the "Reset Firefox" button.
Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
Firefox will open with all factory defaults applied.