Hi, In search for new info myself I ran into your post. I have an ATI Mobility Radeon HD graphic card in one of my laptops. It does not work with SL. I put forward this issue to Linden Labs, who were not helpful. Through other it became clear that it is about the high definition. That does not work with SL: That was confirmed by Linden Labs. Tried all kinds of things to get around it, but no luck. I now use an old laptop to log onto the grid.