I don't know if it's because I may have deleted a file when I was replacing my dock in Leopard (however, now I use PimpMyDock) but every now and then (mainly after a few hours) my dock will get pixelated. Mainly the edges become rough and ugly and the dock even sometimes goes invisible. I reset my dock using PimpMyDock, still looks the same. I restart my Mac and it works fine. Why is this happening? And does anyone have a backup of the whole dock folder?