[Pkg-utopia-maintainers] Bug#650002: network-manager-gnome: connection to WiFi leads to 'Gtk-WARNING **: cannot open display: :0.0'

[tom]

Package: network-manager-gnome
Version: 0.9.2.0-1
Severity: normal

Dear Maintainer,

connecting to wireless LAN leads to the fact that it is impossible to open any new window (since a dist-upgrade yesterday).
Typing a command in a previously opened terminal that normally opens a new window (e.g. `mousepad') 
leads to the following message:

'No protocol specified

(mousepad:3883): Gtk-WARNING **: cannot open display: :0.0'

If any further info is needed I will try to provide it.
Thanks!
Tom

-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.1.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages network-manager-gnome depends on:
ii  dbus-x11             1.4.16-1  
ii  dpkg                 1.16.1.1  
ii  gconf2               2.32.4-1  
ii  gnome-icon-theme     3.2.1.2-1 
ii  libatk1.0-0          2.2.0-2   
ii  libc6                2.13-21   
ii  libcairo-gobject2    1.10.2-6.1
ii  libcairo2            1.10.2-6.1
ii  libdbus-1-3          1.4.16-1  
ii  libdbus-glib-1-2     0.98-1    
ii  libfontconfig1       2.8.0-3   
ii  libfreetype6         2.4.8-1   
ii  libgconf2-4          2.32.4-1  
ii  libgdk-pixbuf2.0-0   2.24.0-1  
ii  libglib2.0-0         2.28.8-1  
ii  libgnome-bluetooth8  3.2.1-1   
ii  libgnome-keyring0    3.2.0-3   
ii  libgtk-3-0           3.0.12-2  
ii  libnm-glib-vpn1      0.9.2.0-1 
ii  libnm-glib4          0.9.2.0-1 
ii  libnm-gtk0           0.9.2.0-1 
ii  libnm-util2          0.9.2.0-1 
ii  libnotify4           0.7.4-1   
ii  libpango1.0-0        1.29.4-2  
ii  network-manager      0.9.2.0-1 
ii  policykit-1-gnome    0.105-1   

Versions of packages network-manager-gnome recommends:
ii  gnome-bluetooth                        3.2.1-1   
ii  iso-codes                              3.30-1    
ii  libpam-gnome-keyring [libpam-keyring]  3.0.3-2   
ii  mobile-broadband-provider-info         20110806-1
ii  notification-daemon                    0.7.3-1   
ii  xfce4-notifyd [notification-daemon]    0.2.2-1   

Versions of packages network-manager-gnome suggests:
ii  network-manager-openvpn-gnome  <none>   
ii  network-manager-pptp-gnome     <none>   
ii  network-manager-vpnc-gnome     0.9.2.0-1

-- no debconf information