Nvidia Beta drivers 301.24, FXAA works in CloD

[pyro]

I've just downloaded these drivers and I'm having an infuriating problem. When I go in game, I can't get it to run at the native resolution. It's zoomed in to a lower resolution.
This is also happening in the SF2 series and the old IL-2.

Yes, I've checked the in game settings on all the programs and they're all set to the correct 1920 x 1080 @60Hz native desktop resolution. I've looked in the Nvidia control panel and everything looks set correctly. I thought it might be the scaling option (under display settings) but changing the options there make no difference.
I've also looked under the Win7 control panel and everything there looks ok.
With the previous version (285 i think) everything runs at native res no problem.
I did a restart after updating the drivers.
Sorry for the long post but I'm obviously a tool and can't see what's probably a simple solution.

Any suggestions?