The link provided by the submitter is now broken. It seems that http://www.cs.mcgill.ca/~joerg/downloads/auction_system.tar.gz provides the tarball that he describes. With gnat-4.4-4.6-5 and libpolyorb1-dev-2.6.0~20090423-10 (providing /usr/bin/po_gnatdist, emulation of the obsolete /usr/bin/gnatdist), I get a compilation error but no bug box.