I have won the fight all by myself.

["Ariel V. Burbaickij" <pustota@xxxxxx>]

Reasons for problems were :
1) For not being able to write to log-file:
	Restrictive permissions set on file
	by system by defualt.
2) For not being able to print PDF/PS files
   and getting just page description commands:

   This entry being uncommented also by default
   during creation of /etc/printcap:

   lp|local line printer:\
       :sh:\
       :lp=/dev/lpt0:sd=/var/spool/output/lpd:lf=/var/log/lpd-errs:

or at least I think so.

In both cases I cannot say that it was my fault.

Dare to suggest to take described cases in 
TROUBLESHOOTING file in FreeBSD specific
section.

Regards.