Actually, I prefer only being able to drag from the corner, as OS X did it through Snow Leopard / 10.6 (not sure about Classic?). Too often on modern OS’s I find myself resizing windows by accident, or not resizing them when I mean to because the initiation area is too small.
The Platinum UI ended up in a weird middle ground -- windows had thick borders which were clickable, but dragging them would move the window, not resize it!
