You had an outdated package list that pointed to URLs that doesn't exist any more. So it's quite natural that you get 404's. The command "sudo aptitude update" updates the package list.
I'm marking this as invalid then. ** Changed in: curl (Ubuntu) Status: Incomplete => Invalid -- amd64 curl package missing from repo https://bugs.launchpad.net/bugs/431030 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs