It started happening about a week ago or so, I turned my monitor on and rippling lines were going up my screen quite small in width. The weird thing is as soon as I opened firefox and therefore my screen was predominately white the rippling stopped. But if there's a slight bit of purple on the screen as with the Daniweb page the screen ripples a bit but if I go to desktop which is mainly black, blue and other colours it starts rippling very intensely. I've tried degaussing to no avail and googleing the problem didn't really come up with anything too related, although its quite hard to describe in accurate search terms.
Any idea what might be causing this or is a new monitor going on my christmas wish list?
I guess its the whole different levels of colour effecting how much it does it that stumps me, I'll find a camera tomorrow and take pictures of the varying levels if that helps.