I use my Radeon 4250 for watching movies on Samsung Hi Def TV on a HDMI port. The video is built onto a Gigabyte MB.
I was watching a movie and the display started flickering green. After a while it ended up with a translucent green overlay over the entire screen. I can still see what is displayed but it has this green screen. I also have a Samsung Syncmaster 933 attached and it displays just fine. Updated the drivers this morning and there is no change.