nm-connection-editor assert failure: ERROR:nm-connection-editor.c:207:connection_editor_validate: assertion failed: (s_con)

[peddanet]

every time I call the nm-connection manager and try to edit my vodafone websession entry (ppp, 3g), I get this error: Failure while initialising the editor: Insufficiient user rights (I typed in the right super user password) or System policy prevents modifying the system configuration (then I cannot cancel or legitimate the action, even I typed in the correct password, the widget then does not take any action...just can close by the close button). I can repeat this and finally get into the configuration editor, but then passwords are missing for example and cannot be changed permanently...

In user rights I set membership to all groups possible...

Package: libnm-0.8~a~git.20091013

ProblemType: Crash
Architecture: i386
AssertionMessage: ERROR:nm-connection-editor.c:207:connection_editor_validate: assertion failed: (s_con)
CRDA: Error: [Errno 2] No such file or directory
CrashCounter: 1
Date: Mon Oct 19 10:25:24 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/nm-connection-editor
Gconf:

IfupdownConfig:
 auto lo
 iface lo inet loopback
IpRoute:
 10.64.64.64 dev ppp0 proto kernel scope link src 10.230.97.154
 169.254.0.0/16 dev ppp0 scope link metric 1000
 default via 10.64.64.64 dev ppp0 proto static
NonfreeKernelModules: nvidia
Package: network-manager-gnome 0.8~a~git.20091014t134532.4033e62-0ubuntu1
ProcCmdline: /usr/bin/nm-connection-editor
ProcEnviron:
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
Signal: 6
SourcePackage: network-manager-applet
StacktraceTop:
 __kernel_vsyscall ()
 raise () from /lib/tls/i686/cmov/libc.so.6
 abort () from /lib/tls/i686/cmov/libc.so.6
 g_assertion_message () from /lib/libglib-2.0.so.0
 g_assertion_message_expr () from /lib/libglib-2.0.so.0
Title: nm-connection-editor assert failure: ERROR:nm-connection-editor.c:207:connection_editor_validate: assertion failed: (s_con)
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin audio cdrom dialout dip fax fuse lpadmin netdev plugdev sambashare tape video

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #445951, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.