User was having problems printing from Microsoft Word X on her Mac (latest Snow Leopard). Printing to PDF produced blank PDFs. Printing to the printer resulting in blank pieces of paper. Yet creating a new test document from scratch (just typed a few words into the page) was able to produce a valid PDF. A quick review of the Console log showed the following: 05/03/2011 21:51:07 [0x0-0x17017].com.microsoft.Word[176] WARNING: Font "Arial" with style 1 can't be handled by the imaging system. This document can't be drawn/printed with this font. Turns out there were two copies of Arial on her Mac: one in the central Library folder and one in her personal Library folder. I removed the copy from her personal Library folder, restarted Word, and all was then working fine.