This is strictly related to the detail tab because it doesn't appear to be a problem in the basic tab. When I press the option key to switch to the secondary sharpening view, it doesn't always work. I'd say it functions properly about half the time. A forum search didn't bring anything up on this issue, so I assume it isn't common behavior. I'm running 4.2 on a Power Mac G5 with the latest iteration of Tiger. Any advice on how to cure this would be appreciated.