Custom font sometimes renders in italics in IE8 / IE7

Question

In IE7 and IE8, when using a custom web font, text is sometimes rendered in italics, even when I explicitly set font-style: normal. The issue is sporadic - it will

Answer 1

If, like me, you came across this question while experiencing a similar issue using TypeKit fonts, this entry from the TypeKit blog explains how you can force unique font-family names for each weight & style of a TypeKit font to address it.