Elongated images after upgrading to mt lion

I agree that the pics on the left look natural - unless the guy weighs about 400 pounds and the girl weighs 300+. That's the only way a face is going to be the same dimension in the vertical and horizontal axis.

Thanks

Well, therein lies the problem. On my screen they look weirdly stretched vertically. Way
tall and skinny . . . Apparently, when they are on other people's monitors they look normal.

I'm just going to have to make the adjustment in my brain, since I can't seem to do it on the computer. But thanks again, to everyone who tried to help.

Much appreciated!