Our webdesigner has created a CSS with the following font-face:
@font-face {
font-family: \'oxygenregular\';
src: url(\'oxygen-regular-webfont.eot\')
I've faced with the same issue.
In case if header of the .eot file contains Cache-Control: no-cache value, IE9 doesn't load font properly. Dev Tools showed Result - 200, but column Received showed 400B, in the same time Content-Length was 70Kb. I've used following value Cache-Control: max-age=0, to fix issue.