Ubuntu
cupsys package

  1. Bug #40795
  2. Comment #24

Comment 24 for bug 40795

Revision history for this message
Mark Stosberg (markstos) wrote : Re: cannot write /var/cache/cups/ppds.dat on live system

This person seems to be experiencing the same issue, and confirms that is still present after an HD install:
http://www.kdedevelopers.org/node/2076

I have also confirmed silent failure at the end of the printer wizard with the 6.06 official LiveCD.