I followed the information in the Debian bug report ; I downgraded perlmagic from 7:6.5.1.0-1.1ubuntu3 to the version of Jaunty 6.4.5.4.dfsg1-1ubuntu3.1, and it solved the issue ; I can now save my scanned documents as PDF without problems.
I followed the information in the Debian bug report ; I downgraded perlmagic from 7:6.5.1. 0-1.1ubuntu3 to the version of Jaunty 6.4.5.4. dfsg1-1ubuntu3. 1, and it solved the issue ; I can now save my scanned documents as PDF without problems.