In the last week or so a few of our users have no longer been able to use the keyboard shortcut to make some fonts bold even though you can go select the bold from the type menu so obviously the bold version is installed and active. After talking with others in our group, some of them have had this happen in the past and then things resolved on their own. I researched this and found the thread here
http://forums.adobe.com/message/2653026#2653026
which mentioned that some fonts don't contain the data to indicate that they contain a bold version, but that theory doesn't seem to apply in our situation. We use a set of corporate fonts that have not changed and the same version of the fonts are installed on all our computers, which are all cloned off a single image so set up is identical. Some users can make the fonts bold using shortcuts and others cannot, so I don't think it has anything to do with the font itself not containing the proper data or it wouldn't work on any of the computers. Also, if I switch to a different user on the same computer I am able to use the shortcut keys so again. Could there be any other reason why the shortcut keys would simply stop working? I've tried replacing InDesign's preference files and that does not work either. We are running CS4 on OS X 10.5.8.