Hello, Short advice. Because python2.3-profiler is not longer necessary for bkchem, it can go to main. The updated URLs for the package and the source: http://debian.wgdd.de/debian/dists/unstable/main/binary-i386/science/ http://debian.wgdd.de/debian/dists/unstable/main/source/science Build-log (if wanted): http://debian.wgdd.de/debian/build_logs/bkchem_0.11.0-0dl1_i386.build