I'm using Ubuntu and I have a Samsung Syncmaster 2232 monitor, which is a 22" widescreen. I also have version 185.18.14 of the nVidia video driver, running on an XFX GeForce 6200.
My problem is that while the driver works at my monitor's native resolution, (1680x1050) for some reason it always goes back to 1600x1024 whenever I reboot the system. I've used the nVidia software to save the settings, but it always goes back. It's even in /etc/X11/xorg.conf as 1680x1050, so I have no idea why it goes back to the other resolution.