Running preupgrade when the network is down (e.g. before association with wireless) yields the following traceback if run from a terminal:

Traceback (most recent call last):
  File "/usr/share/preupgrade/preupgrade-gtk.py", line 750, in <module>
    widgets = PreUpgradeGtk()
  File "/usr/share/preupgrade/preupgrade-gtk.py", line 313, in __init__
    self.pu = preupgrade.PreUpgrade()
  File "/usr/lib/python2.5/site-packages/preupgrade/__init__.py", line 267, in __init__
    self.release_map = self.retrieve_release_info(configfile)
  File "/usr/lib/python2.5/site-packages/preupgrade/__init__.py", line 321, in retrieve_release_info
    configdata = grabber.urlopen(configfile)
  File "/usr/lib/python2.5/site-packages/urlgrabber/grabber.py", line 890, in urlopen
    return self._retry(opts, retryfunc, url)
  File "/usr/lib/python2.5/site-packages/urlgrabber/grabber.py", line 851, in _retry
    r = apply(func, (opts,) + args, {})
  File "/usr/lib/python2.5/site-packages/urlgrabber/grabber.py", line 889, in retryfunc
    return URLGrabberFileObject(url, filename=None, opts=opts)
  File "/usr/lib/python2.5/site-packages/urlgrabber/grabber.py", line 1007, in __init__
    self._do_open()
  File "/usr/lib/python2.5/site-packages/urlgrabber/grabber.py", line 1086, in _do_open
    fo, hdr = self._make_request(req, opener)
  File "/usr/lib/python2.5/site-packages/urlgrabber/grabber.py", line 1215, in _make_request
    raise URLGrabError(4, _('IOError: %s') % (e, ))
urlgrabber.grabber.URLGrabError: [Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')>

When run from the GUI, no indication is given that the application even started.

Instead, some form of GUI error message should be displayed indicating that the application did in fact actually run, and that an error occurred.

preupgrade-1.0.0-1.fc9.noarch