Ive still got a 2006 model and for 2 years it has been acting strangely by freezing everyday. Its either black screen suddenly showing up, or freeze or as this picture tries to illustrate, a freeza that makes the picture slowly "disintegrate" on onto lines and artifacts before the whole screen becomes gray. every single freeze is hard one that i have to press the shut down button. i have a hunch that its the gpu. i know that this one is old, im waiting for a decent MBPr to be released. im wondering if you know if there is a fix or if you have experienced anything like this.