I can confirm the above mentioned bug on my Ubuntu 8.10 (Intrepid).
I also changed permissions on /usr/lib/cups/backend/cups-pdf with:
sudo chmod 755 /usr/lib/cups/backend/cups-pdf
and made the failed status on the printing window go away as marcobra did.
I created the PDF folder in my home folder, but still no pdf files can be printed.
No error in the /var/log/cups/error_log appears with the 755 permissions. With 700 permissions i get a "stopped with status 5!" error.
I can confirm the above mentioned bug on my Ubuntu 8.10 (Intrepid).
I also changed permissions on /usr/lib/ cups/backend/ cups-pdf with:
sudo chmod 755 /usr/lib/ cups/backend/ cups-pdf
and made the failed status on the printing window go away as marcobra did.
I created the PDF folder in my home folder, but still no pdf files can be printed.
No error in the /var/log/ cups/error_ log appears with the 755 permissions.
With 700 permissions i get a "stopped with status 5!" error.