Some users are reporting problems with Office 2011 after updating to 10.6.7. The font issue affects older versions of Office as well.
Outlook 2011 users unable to reply or create new emails 10.6.7 breaks OpenType PostScript fonts
Issue 1: Even though Apple does not require you to quit your Office 2011 applications, you should quit applications before updating. I suggest that you quit all running applications by logging out under the Apple in the Menu . . .
Continue Reading: Updating to 10.6.7 with Office for Mac