synaptic crashed on me as well when dist-upgrading to current feisty. It was giving me an error message about the compiz upgrade failing due to some files being overwritten. I clicked on "close", clicked "upgrade" and synaptic crashed.
-- [apport] synaptic crashed with SIGSEGV https://launchpad.net/bugs/90162 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
