Under potato I can't install emacs20 since it depends on liblockfile0, and liblockfile0 'does not appear to be available', according to dselect.
'apt-get install emacs20' says something similar. I just ran 'apt-get update', and here's my sources.list: deb ftp://ftp.debian.org/debian unstable main contrib non-free deb ftp://nonus.debian.org/debian-non-US unstable/non-US main contrib non-free I found a thread on the -user archive from a couple weeks ago, but I didn't see a clear solution. /debian/dists/unstable/main/binary-i386/libs contains liblockfile1, but not liblockfile0.