I also had this issue, inside the non-admin user. If can be useful, this is my trace:
ubuntuone-control-panel-gtk Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/ubuntuone-control-panel/ubuntuone/controlpanel/gui/gtk/gui.py", line 1573, in on_show_management_panel self.management.load() File "/usr/lib/python2.7/dist-packages/ubuntuone-control-panel/ubuntuone/controlpanel/gui/gtk/gui.py", line 1502, in load self.services.load() File "/usr/lib/python2.7/dist-packages/ubuntuone-control-panel/ubuntuone/controlpanel/logger.py", line 82, in inner res = f(*args, **kwargs) File "/usr/lib/python2.7/dist-packages/ubuntuone-control-panel/ubuntuone/controlpanel/gui/gtk/gui.py", line 1173, in load logger.info('load: has_desktopcouch? %r', self.has_desktopcouch) File "/usr/lib/python2.7/dist-packages/ubuntuone-control-panel/ubuntuone/controlpanel/gui/gtk/gui.py", line 1145, in has_desktopcouch return self.package_manager.is_installed(DESKTOPCOUCH_PKG) File "/usr/lib/python2.7/dist-packages/ubuntuone-control-panel/ubuntuone/controlpanel/gui/gtk/package_manager.py", line 49, in is_installed cache = apt.Cache() File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 93, in __init__ self.open(progress) File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 140, in open self._list.read_main_list() SystemError: E:Apertura di /etc/apt/sources.list.d/private-ppa.launchpad.net_commercial-ppa-uploaders_fullcircle-issue-50_ubuntu.list - ifstream::ifstream (13: Permesso negato) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/852003 Title: USC fails to launch in non-admin user account if there's a private PPA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-apt/+bug/852003/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs