The problem has been identified: the file "/etc/hosts" had been corrupted during a prior update -- there should be a line of the form: 127.0.1.1 {machine-name}.{domain-name} {machine-name}
,,,but mine had lost the second instance of "{machine-name}", causing it to "lock-up". by reinserting it (using the command "gksudo gedit /etc/hosts"), Update Manager happily downloaded and installed a large number of updates. Perhaps the code that references this line of /etc/hosts could verify that it is in the correct form, and issue a warning diagnostic if not? -- Update-manager locks up when "Check" is clicked https://bugs.launchpad.net/bugs/232082 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