regular for me, tried it when i installed ie 7 i acidentally checked it, and went crazy on how to remove it, finally did it 10 min later, worst 10 minutes of vewing, this is on a lcd too
You probably needed to run the tuner because you had a panel with a different subpixel ordering or that was otherwise at odds with the default ClearType settings. You still might not have liked the results, but it wouldn't have been as bad as that.
It would be interesting to see a study done with a set of subjects using the same panels and fonts, and controlling for eyesight as well. It could be there's a subjective component as well as a biological one (perhaps some people need more help with edge recognition). But when we have a huge set of people all using different panels and different fonts, and some probably using analog connections instead of DVI as well, it's impossible to tease out any conclusions.