[CentOS] Can't print a pdf?

I just had a strange occurrence. I was printing out some PDFs and I pulled one down off the web (my wireless bill) and tried to print page 1. My browser properly fired up AR9, but nothing printed. I tried agian, still nothing. I saved the file, opened it with the Document Viewer and it can't print the file either. I tried opening it with GIMP, and it gets this error:

Opening '/home/mhr/Documents/pdfs/vzwA0418.pdf' failed: Plug-in could not open image

I couldn't find any related data in the logs (spooler logs are all empty, nothing in dmesg). I tried disabling and enabling the printer, then turning it off and on to no effect (which is not too surprising).

Anyone have a clue where I should look or what to do?

Thanks.

mhr