Everytime when oppening a pdf file with AdobeReader 8 the Desktop change the color from highest (32 bit) to lowest (8 bit). To remedy the problem I have to go each time to Control Panel/Personalization/Display settings and change the color to 32bit. I am using a notebook DELL Latitude D820 with NVIDIA Quadro NVS 120m and Windows Vista Home Premium. The problem appeared suddenly.
Please help !