I could not think of a better place to post this so I figured I'd try here and maybe someone with some computer skills could solve the problem. I recently bought a new computer. Athlon dual core processor with vista. I have 2 nvidia quadro nvs 280 cards. Every now and then (to my observation when ram usage gets heavy) all the apps I have open will do very strange stuff. They will dissapear from the screen, once I highlight over them they will sometimes reappear or some buttons will reappear. In addition, my start menu goes to the top of my screen even though I can still click on the bottom to bring it up. Nothing is visible until I click on it or highlight it. I tried closing all programsopen and then I tried clearing ram and that didn't do anything. If I logoff, I can log back in and everything will be back to normal. If anyone has any ideas please let me know because I'm stumped and I've delt with windows help people before and don't want to do it again. Thanks guys.