It is possible that alioth may be getting overloaded. Try one of the following two mirrors.
deb http://debian.inode.at/pure64/ sid main deb-src http://debian.inode.at/pure64/ sid main
deb http://bach.hpc2n.umu.se/pure64 sid main deb-src http://bach.hpc2n.umu.se/pure64 sid main
debian.inode.at doesn't provide any packages built with gcc-3.4 for amd64. On bach there is no debian-installer directory.
Regards
Harri
