Description of problem:
Just launching meld gives this error.
I tried both normally on the command line, and with "rpmconf -a --frontend=meld".

Version-Release number of selected component:
meld-1.7.0-6.fc18

Additional info:
cmdline:        python /usr/bin/meld /etc/tor/torrc /etc/tor/torrc.rpmnew
executable:     /usr/bin/meld
kernel:         3.8.1-201.fc18.x86_64
uid:            0

Truncated backtrace:
prefs.py:93:__init__:GError: Nessun demone D-BUS in esecuzione


Traceback (most recent call last):
  File "/usr/bin/meld", line 154, in <module>
    main()
  File "/usr/bin/meld", line 136, in main
    import meld.meldapp
  File "/usr/share/meld/meld/meldapp.py", line 216, in <module>
    app = MeldApp()
  File "/usr/share/meld/meld/meldapp.py", line 113, in __init__
    self.prefs = preferences.MeldPreferences()
  File "/usr/share/meld/meld/preferences.py", line 259, in __init__
    super(MeldPreferences, self).__init__("/apps/meld", self.defaults)
  File "/usr/share/meld/meld/util/prefs.py", line 93, in __init__
    self._gconf.add_dir(rootkey, gconf.CLIENT_PRELOAD_NONE)
GError: Nessun demone D-BUS in esecuzione


Local variables in innermost frame:
rootkey: '/apps/meld'
initial: {'use_custom_font': <meld.util.prefs.Value object at 0xef4a70>, 'statusbar_visible': <meld.util.prefs.Value object at 0xf8e1b8>, 'custom_font': <meld.util.prefs.Value object at 0xef4560>, 'use_syntax_highlighting': <meld.util.prefs.Value object at 0xef4ef0>, 'text_codecs': <meld.util.prefs.Value object at 0xf85c68>, 'filters': <meld.util.prefs.Value object at 0xf85e18>, 'show_line_numbers': <meld.util.prefs.Value object at 0xef4e60>, 'spaces_instead_of_tabs': <meld.util.prefs.Value object at 0xef4e18>, 'edit_command_custom': <meld.util.prefs.Value object at 0xef4fc8>, 'regexes': <meld.util.prefs.Value object at 0xf85dd0>, 'tab_size': <meld.util.prefs.Value object at 0xef4dd0>, 'show_whitespace': <meld.util.prefs.Value object at 0xef4ea8>, 'edit_wrap_lines': <meld.util.prefs.Value object at 0xef4f38>, 'ignore_blank_lines': <meld.util.prefs.Value object at 0xf8e128>, 'window_size_x': <meld.util.prefs.Value object at 0xef0050>, 'window_size_y': <meld.util.prefs.Value object at 0xef43b0>, 'vc_status_filters': <meld.util.prefs.Value object at 0xf8e248>, 'edit_command_type': <meld.util.prefs.Value object at 0xef4f80>, 'toolbar_visible': <meld.util.prefs.Value object at 0xf8e170>, 'dir_status_filters': <meld.util.prefs.Value object at 0xf8e200>, 'ignore_symlinks': <meld.util.prefs.Value object at 0xf85c20>, 'vc_console_visible': <meld.util.prefs.Value object at 0xf85cf8>}
self: <meld.preferences.MeldPreferences object at 0xda3cd0>