@spivonious:As Kettch says, there is a significant %age of people for who both ClearType and various sub-pixel manipulation just doesn't work, and I'm one of those.
It doesn't matter what monitors I use (at the moment I have a pair of Dell U2410 on my desk, but I've tried many LCD, LED and CRT monitors) ClearType is totally unreadable to me, and can't be "tuned" to a readable state.
Fortunately I can control ClearType, by switching it off and substituting SegoeUI etc.
However, IE9 doesn't have an option to disable its font rendering, and for me (and plenty of people like me) text on IE is a blurry mess... like someone just smeared vaseline on your monitor, or you forgot to put your glasses on... trying to use IE9 very quickly gives me a headache.
All that is needed is an option to switch it off, and use IE8's font rendering (which I have no problem with) but the IE team seem determined to ignore the people complaining about this.