Hi, The oddest graphics glitch is happening. When the playhead moves across the screen from left to right, the colors of the regions fade as the playhead moves across them. It's an intermittent problem in that it will stay for hours and then stop. I haven't been able to figure out what makes the problem disappear. Logic 9.1.1 MacPro 8 core Nehalem Has anyone else had this problem or heard of it happening? I fear it's the graphic card. The computer is still under warranty. I just wanted to verify that it wasn't a Logic issue. Thanks!