Safari: 3.2, 4, 5, nightly
Chrome: 8, 9, 10, 11
Internet Explorer: 6, 7, 8, 9
Firefox: 2, 3, 3.5, 3.6, nightly
Opera: 9.6, 10, 11
So, that’s 5 browsers with about 20 versions among them, and each suite needs to be run on every browser version. You can see how the amount of tests that have to be ...