My eMac G4 is having intermittent blurry screen problems. It's not just in Safari, it happens with my documents and everything else that's typed too, and I've tried adjusting the resolution with no luck. The dock and my desktop aren't affected. I've tried posting about this twice in the Mac Basics and help section, but the first time, several months ago, no one responded and this time I was directed to come here. It's becoming more frequent. Any ideas or thoughts on how I might cure this?