I received my mac pro and 30" ACD yesterday and both have been absolutely fantastic. That is until I came back to the machine after cooking some lunch, woke the machine from sleep and now the screen is a bit funky. Its like there's a very fine hexagonal filter over everything. Everything looks a bit greyer and I can see where the backlight is quite obviously darker at the edges. Its quite hard to describe and I think photos wouldn't show it up enough. :-S I've tried powering it off and back on, disconnecting the power, plugging it into another DVI socket all to no avail. During start up the white apple logo on the grey background exhibited the same issues. Any ideas?