After setting up multiple Google Apps domains / mail accounts to use with Firefox’s great tabbing feature, I discovered Firefox was using more memory on my PC (300MB+ out of 2GB RAM). I found one particular blog post from last year on blogspot.

They suggest tweaking the about:config page of Firefox which gives you access to every config property and more in Firefox. So far I haven’t seen a major improvement in memory footprint for Firefox, but I definitely see a speed improvement.

If you try it out and have different results or know of any other ideas, please leave a comment.