I believe No proxies set. I can install anything using synaptic without fail. Update-manager some time works and sometime doesn't. I can update through terminal as well.
These are the terminal messages while running software-center 2011-12-03 22:05:16,677 - softwarecenter.ui.gtk3.em - INFO - EM's: 17 13 20 2011-12-03 22:05:17,359 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file 2011-12-03 22:05:17,567 - softwarecenter.ui.gtk3.utils - INFO - Softwarecenter style provider for ambiance Gtk theme: /usr/share/software-center/ui/gtk3/css/softwarecenter.css 2011-12-03 22:05:19,802 - softwarecenter.ui.gtk3.widgets.exhibits - WARNING - download failed: '<class 'gi._glib.GError'>', 'HTTP Error: Cannot resolve proxy hostname ()' 2011-12-03 22:05:24,054 - softwarecenter.ui.gtk3.app - INFO - software-center-agent finished with status 0 2011-12-03 22:06:50,979 - softwarecenter.ui.gtk3.widgets.exhibits - WARNING - download failed: '<class 'gi._glib.GError'>', 'HTTP Error: Cannot resolve proxy hostname ()' -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/899679 Title: development release of software-center failed to install applications To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/899679/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs