When printing to cups-pdf from applications that use PDF as the printing format, the PDF output from the application is converted to PostScript using pdftops then back to PDF using Ghostscript. This turns a perfectly good PDF file into a crappy PDF file that does not display images correctly and the text is not selectable. If the print job is already in PDF format, cups-pdf should just pass the file through unmodified or at least avoid the PDF->PS->PDF conversion.
DistroRelease: Ubuntu 11.04
Package: cups-pdf 2.5.1-2
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 220.127.116.11
Uname: Linux 2.6.38-10-generic x86_64
Date: Thu Aug 4 18:41:17 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
UpgradeStatus: Upgraded to natty on 2011-05-01 (95 days ago)