I had tried to uncheck the Enable Opengl. Well, it works okay but it is very very slow. i cannot do multi tasking. Once i do many things at a time, this error always appear. http://www.geocities.com/chuawenching/vueshutdown.JPG I only had 256MB DDR-400. Is it because insufficient memory? My hard disk left 1.8GB left. Is there any other options that i need to disabled to make my Vue 4 Professional work faster? Thanks.