I ran update-manager -c -d from a non-up-to-date dapper to Edgy and all went well no errors at all. I did this on Fri Oct, 10 2006
-- Error during Dapper-->Edgy update, problem removing python2.3 https://launchpad.net/bugs/56779 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs