A question for anyone with a Mac running Mountain Lion: What browser do you use? The reason I ask is I have an old late 2006 24" iMac running 10.8.5. Firefox, Chrome, Opera all give me issues. I primarily use Firefox but it's a memory hog and also fairly crash-happy. To make matters worse Firefox will drop support next year and the other two already have. Safari works but is old at this point and needs a Webkit update.