You are using the software 'Acrobat Distiller Server' ?
Is it a Dell server by any chance?
After some research I found some threads that pointed to fonts being an issue. I changed the following:
Ignore True Type versions of standard PostScript fonts
Do not send fonts to "Adobe PDF"
The issue seems to have been resolved.
Looks like that you use Adobe Acrobat, not Acrobat Distiller Server.