Has anyone else run into this issue in OS X? I've had no problems with my mac pro or graphical issues before but since I got my Dell 2408 ultrasharp and started using dual monitors, I run into occasional problems. Specifically: - Whenever flipping through things in Coverflow(especially in itunes) my mac pro will hard lock forcing a physical restart(hold the power button down). - If I let the itunes album art screensaver run for a long while my system can lock up as well. My setup is as follows: early 2008 Mac Pro 8800gt video card Quad core 2.8 4gb of ram Displays: 24inch Dell 2008 model ultrasharp(1900x1200 rez) Older 20 inch gateway in vertical mode(1050x1680 rez) Running them in dual mode spanning between them. I've also verified/repaired permissions and for reference I'm running 10.5.2 with all updates applied.