I got today for my MacBookPro 2010 i7 15" a NEC PA271W as a main display for image editing issues. In addition I baught from Apple a mini-DisplayPort to DVI Adapter to be able to connect the Monitor to my Macbook pro. The problem now is that I am not able to use full resolution (2560x1440) because my system setup only gives me the opportunity to a max of 1920x???. Any idea what could be the reason for this??