IE9 letter-spacing problem

Question

I have a page that renders ok, in FF (3x, 4x), Chrome, IE (6, 7, 8).

When tested on IE9 the texts are wider. Investigating the problem it appears that the text is actu

Answer 1

It may have to do with rounding up/down. Using tenths of a px is a strange thing to do since you can't get less than a whole pixel on a screen unless you know how the rounding will go. You can't rely on IE to get anything right anyway.