Video mode switching problem w/ steam games

anyone know how to deal with the video frame freezing (well stuck in hourglass, have to end the game task) when switching resolutions within game?

happens to me in geometry wars and portal using both latest whql and beta drivers for my 8800gtx after reformatting recently.

Bah, seems to just be a Geometry Wars issue.

Had to edit config.xml and manually specify 1920x1200 maintaining aspect ratio and anti-aliasing “on” located in:
C:\Documents and Settings<user>\Local Settings\Application Data\Bizarre Creations\Geometry Wars Retro Evolved