unity-webapps-context-daemon crashed with SIGSEGV in magazine_chain_pop_head()

??? I did nothing special ...???

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: unity-webapps-service 2.3.8-0ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-16.25-generic 3.5.4
Uname: Linux 3.5.0-16-generic x86_64
ApportVersion: 2.5.3-0ubuntu1
Architecture: amd64
Date: Sat Sep 29 23:12:38 2012
ExecutablePath: /usr/lib/libunity-webapps/unity-webapps-context-daemon
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120724.2)
ProcCmdline: /usr/lib/libunity-webapps/unity-webapps-context-daemon OMG!\ Ubuntu! www.omgubuntu.co.uk http://cloudfront.omgubuntu.co.uk/wp-content/themes/randyjensen-handcrafted-wp-theme-2d2cd06/images/logo.png [Invalid\ UTF-8]
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7f3cf75f6852 <g_slice_alloc+210>: mov 0x8(%rdx),%rbx
 PC (0x7f3cf75f6852) ok
 source "0x8(%rdx)" (0x7f3c00000008) not located in a known VMA region (needed readable region)!
 destination "%rbx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: libunity-webapps
StacktraceTop:
 g_slice_alloc () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_variant_builder_end () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_variant_new_va () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: unity-webapps-context-daemon crashed with SIGSEGV in g_slice_alloc()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
XsessionErrors:
 (indicator-multiload:2089): GLib-GIO-CRITICAL **: GApplication subclass 'Main' failed to chain up on ::startup (from start of override function)
 (fogger:2841): Gtk-CRITICAL **: _gtk_tree_view_column_autosize: assertion `GTK_IS_TREE_VIEW (tree_view)' failed
 (firefox:4599): GLib-CRITICAL **: g_variant_new_string: assertion `string != NULL' failed