We have a lot of Samsung SyncMaster 2443s at the office, when I connect my mid 2012 MBP 13" to one of them, the monitor doesn't display full screen, it adds a black border around it (1/2" thick). All my co workers with similar MBP and MBAs do not have this problem, it also persists on all the screens i've tried so far (3 different ones).
I've added a photo of the screen, it's like that all around. I can't find any setting on the screen or in system preferences to change it. I'm sure it has to be some kind of software problem, because when I reboot the display is full screen for a while, up to a certain point where I guess some OS setting is loaded.
I've tried resetting NVRAM/PRAM and removing the windowserver.plist files. My display settings are at 'best of resolution', but setting it manually to 1920x1200 doesn't matter.
Any clues on how to fix this?