nm-applet crashed with SIGSEGV in g_data_set_internal()

[Frank]

The network manager (or possibly the network card) has acted weirdly ever since the installation of Ubuntu (the only dissatisfaction with the OS). It will disconnect automatically every now and then and reconnect itself (or not) after a short moment. This time apparently the interface crashed and the network indicator on the panel disappeared as well.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: network-manager-gnome 0.9.2.0+git.20120126t000800.5151959-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-14.23-generic 3.2.3
Uname: Linux 3.2.0-14-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Tue Feb 7 17:30:43 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/nm-applet
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
IpRoute:
 default via 192.168.2.1 dev wlan0 proto static
 169.254.0.0/16 dev wlan0 scope link metric 1000
 192.168.2.0/24 dev wlan0 proto kernel scope link src 192.168.2.102 metric 2
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcCmdline: nm-applet
SegvAnalysis:
 Segfault happened at: 0x7f1f773eec85 <g_datalist_id_set_data_full+341>: mov 0x0(%r13),%esi
 PC (0x7f1f773eec85) ok
 source "0x0(%r13)" (0xaaaaaaaaaaaaaaa8) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: network-manager-applet
StacktraceTop:
 g_datalist_id_set_data_full () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 nma_wireless_dialog_new () from /usr/lib/libnm-gtk.so.0
 ?? ()
Title: nm-applet crashed with SIGSEGV in g_datalist_id_set_data_full()
UpgradeStatus: Upgraded to precise on 2012-02-07 (1 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 eth0 802-3-ethernet unavailable /org/freedesktop/NetworkManager/Devices/0
 wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/1
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 running 0.9.3.0 connected enabled enabled enabled enabled disabled

[Apport retracing service (apport)]

StacktraceTop:
 g_data_set_internal (dataset=0x0, new_destroy_func=0, new_data=0x0, key_id=53, datalist=0x43d00a0) at /build/buildd/glib2.0-2.31.16/./glib/gdataset.c:373
 g_datalist_id_set_data_full (datalist=0x43d00a0, key_id=53, data=0x0, destroy_func=0) at /build/buildd/glib2.0-2.31.16/./glib/gdataset.c:680
 g_object_real_dispose (object=0x43d0090) at /build/buildd/glib2.0-2.31.16/./gobject/gobject.c:1001
 g_object_unref (_object=0x43d0090) at /build/buildd/glib2.0-2.31.16/./gobject/gobject.c:2971
 nma_wireless_dialog_new (client=<optimized out>, settings=0x262acb0, connection=0x42db900, device=0x0, ap=0x0, secrets_only=1) at nm-wireless-dialog.c:1313

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.