I have been connecting my mbp to my Dell 2405 monitor since I bought it, it has always worked fine. Now, it suddenly will not detect the monitor's native resolution of 1920 by 1200, and it shows the display on the monitor as almost a sepia tone, if that makes sense. the max resolution it will display is 1440 by 900, which is the native display of the mbp. This is very frustrating. Previously, I was able to connect the cable and have it detect the new screen, and start displaying it as my primary display at 1920 by 1200 res just fine. Now- it does not work. It shows, with no artifacts, but it does not display at the full resolution. I have tried rebooting, shutting compeltely down, etc. Previously, i could wake it up from sleep and it would properly detect the display. Any thoughts? Help would be appreciated.