I installed 10.5 and get strange interference. It's not the computer as there's no problems with 10.4 Here's a screenshot - actually it's screenshot of a video - the interference doesn't show up on an actual screenshot - very confusing... and a link to the VIDEO - http://kite.seriouslyinternet.com/interference.mp4 I'm doing a huge 'Live Trace' in Illustrator to get the temperature up. It seems to be fan/temp related. As the temp climbs so does the fan speed = more interference. There's no other instances of this on the NET. I've tried resetting PRAM - doing a clean install on another drive then booting from that - safe mode etc... The only way to get rid of it is to boot into 10.4 HELP!!