I hit this problem as well. To be precise, whereas "apt-get update" succeeds (or seems to), "dselect update" fails with:
Merging Available information E: Internal Error, Unable to parse a package record update available list script returned error exit status 100. Press <enter> to continue. This is current sid, with latest dpkg and apt. Even with sid as only source lines the error shows: deb ftp://ftp.debian.org/debian sid main contrib non-free -- Yann Dirson <[EMAIL PROTECTED]> | Why make M$-Bill richer & richer ? Debian-related: <[EMAIL PROTECTED]> | Support Debian GNU/Linux: Pro: <[EMAIL PROTECTED]> | Freedom, Power, Stability, Gratuity http://ydirson.free.fr/ | Check <http://www.debian.org/>

