Firefox is a Memory Hog (150+mb)

All I know is i used to use MS IE and it would lock up on me two or three times a day. Went to FIREFOX and it just keeps running smooth for me. I tried to use CHROME which I really like but it was always having some issues so finally just went back to FIREFOX...

I'm running DUAL SCREENs here so have to say I probably made a WIN 8 machine out of my XP PRO as I have several TABS opened all the time haha...

Roy Ken