Traceback (most recent call last): File "/usr/lib/update-manager/check-new-release", line 36, in (options, args) = parser.parse_args() File "/usr/lib/python2.6/optparse.py", line 1394, in parse_args stop = self._process_args(largs, rargs, values) File "/usr/lib/python2.6/optparse.py", line 1438, in _process_args self._process_short_opts(rargs, values) File "/usr/lib/python2.6/optparse.py", line 1532, in _process_short_opts self.error(_("%s option requires an argument") % opt) File "/usr/lib/python2.6/optparse.py", line 1577, in error self.print_usage(sys.stderr) File "/usr/lib/python2.6/optparse.py", line 1597, in print_usage print >>file, self.get_usage() IOError: [Errno 5] Input/output error