I posted a bug report about this, but I wanted to see if anyone else is having a similar issue.
I have a widescreen monitor and run a resolution of 1920x1200.
Every once in a while, I have to press ALT+Enter to get out of full screen mode to check email, or im or whatever.
When I press ALT+Enter again to get back to full screen mode, the screen changes resolution to 1920x1080.
Here is the strange thing, after this happens, I go into the video options, and it still says 1920x1200, but its not, I have to change it to another resolution, then apply it, then change it back to 1920x1200 for it to look right.
Anyone else having a similar issue?