To see that it isn't listed in the packages file, see here: http://amd64.debian.net/debian/dists/etch/non-free/binary-amd64/Packages It is available for x86, however: http://packages.debian.org/testing/python/python2.3-profiler Note that under Architecture it says all. So what's going on here? Why can't I profile on my AMD64 machine? Thanks, Joshua Gilbert.