synaptic 0.57.8ubuntu11 on Dapper i386 on a AMD 64 based system. I had also installed a Dapper 64 on this system just before the i386 version and the problem was not present. The new installation comes after a format of the ext2 partition.
Synaptic can install/uninstall/reinstall software without problems, the only thing that does not work is the Setting - Repositories panel. I have also tried apt-get install and worked perfectly. I have also tried to reinstall synaptic itself. Attach of sources.list will follow. ** Attachment added: "the source.list file from /etc/apt folder" http://librarian.launchpad.net/3161873/sources.list -- Cannot open Repositories panel in Synaptic Package Manager https://launchpad.net/bugs/50441 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs