Replying to myself here, as I didn't notice this until after posting:
I was unable to follow the instructions from http://wiki.x2go.org/wiki:components:printing, as "apt-get install x2goserver-printing" complains:
Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation:
The following packages have unmet dependencies: x2goserver-printing : Depends: x2goserver (< 3.0.99.8-0~x2go1+squeeze~main~373~build1.1~) but 3.0.99.8-0~x2go-bpo1+lenny~main~388~build1 is to be installed
Why the fnord is it trying to install 3.0.99.8-0~x2go-bpo1+lenny~main~388~build1 - a Lenny package - when my sources.list says
[...] #Backports deb http://ftp.de.debian.org/debian-backports squeeze-backports main contrib non-free
# X2go Repository deb http://packages.x2go.org/debian squeeze main # X2go Repository (sources) deb-src http://packages.x2go.org/debian squeeze main
"bpo" would be an indication that the package is in the backports repository, but even that one is set to squeeze, not lenny. What's going on here?
Confused, Stefan