$ software-center
2013-05-19 10:15:12,212 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2013-05-19 10:15:12,903 - softwarecenter.plugin - INFO - activating plugin '<module 'webapps_activation' from '/usr/share/software-center/softwarecenter/plugins/webapps_activation.pyc'>'
2013-05-19 10:15:12,917 - softwarecenter.fixme - WARNING - logs to the root logger: '('/usr/lib/python2.7/dist-packages/gi/importer.py', 51, 'find_module')'
2013-05-19 10:15:12,916 - root - ERROR - Could not find any typelib for LaunchpadIntegration
2013-05-19 10:15:13,015 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open()
2013-05-19 10:15:20,882 - softwarecenter.backend.spawn_helper - WARNING - exit code 1 from helper for '['/usr/share/software-center/piston_generic_helper.py', '--datadir', '/usr/share/software-center/', '--needs-auth', '--no-relogin', 'SoftwareCenterAgentAPI', 'subscriptions_for_me', '{"complete_only": true}']'
2013-05-19 10:15:20,883 - softwarecenter.backend.spawn_helper - WARNING - got error from helper: 'WARNING:__main__:503: {'status': '503', 'content-length': '107', 'via': '1.1 software-center.ubuntu.com', 'transfer-encoding': 'chunked', 'vary': 'Accept-Encoding', 'connection': 'close', '-content-encoding': 'gzip', 'cache-control': 'no-cache', 'date': 'Sun, 19 May 2013 14:15:19 GMT', 'content-type': 'text/html'}
'
2013-05-19 10:15:20,883 - softwarecenter.db.update - WARNING - update_from_software_center_agent: error: "WARNING:__main__:503: {'status': '503', 'content-length': '107', 'via': '1.1 software-center.ubuntu.com', 'transfer-encoding': 'chunked', 'vary': 'Accept-Encoding', 'connection': 'close', '-content-encoding': 'gzip', 'cache-control': 'no-cache', 'date': 'Sun, 19 May 2013 14:15:19 GMT', 'content-type': 'text/html'}\n"
2013-05-19 10:15:24,528 - softwarecenter.db.utils - INFO - software-center-agent finished with status 0
$