We recently found a few computers where showing Arial Black as italicized at all times with no way to change it. This was a problem in both AutoCAD and Revit (but not MS Word). After a little research I found a post on an Adesk newsgroup that mentioned Windows XP SP3 was the problem. So we copied the Arial Black fonts (regular + Italic) to the prolem machines and all was well.

Just thought I would mention it here to share in this finding…