Quoting Niko Tyni <ntyni@debian.org>:
Thanks for trying. Do you have a chance to test the theory that this somehow depends on the kernel? A squeeze system with a sid chroot should work for that.
I tested building of the libapache2-mod-perl2 package on a sid chroot on a Debian squeeze (ia64, kernel 2.6.32). Unfortunately it was successfully. The build log had the known messages about starting of the Apache server and the list of test steps; each with an 'ok'.
Stephan