Evolution is crashing a lot lately. I do not know if it is related to the GNOME Keyring update or DBus upgrade. Can you figure that out from the backtrace below?

I am using Debian Sid/unstable Evolution version 2.28.3-1.

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: i386 (x86_64)

Kernel: Linux 2.6.32-3-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages evolution depends on:
ii  dbus                    1.2.24-1         simple interprocess messaging syst
ii  debconf [debconf-2.0]   1.5.32           Debian configuration management sy
ii  evolution-common        2.28.3-1         architecture independent files for
ii  evolution-data-server   2.28.3.1-1       evolution database backend server
ii  gconf2                  2.28.1-3         GNOME configuration database syste
ii  gnome-icon-theme        2.30.0-2         GNOME Desktop icon theme
ii  libart-2.0-2            2.3.20-2         Library of functions for 2D graphi
ii  libatk1.0-0             1.30.0-1         The ATK accessibility toolkit
ii  libbluetooth3           4.60-1           Library to use the BlueZ Linux Blu
ii  libbonobo2-0            2.24.3-1         Bonobo CORBA interfaces library
ii  libbonoboui2-0          2.24.3-1         The Bonobo UI library
ii  libc6                   2.10.2-6         Embedded GNU C Library: Shared lib
ii  libcairo2               1.8.10-4         The Cairo 2D vector graphics libra
ii  libcamel1.2-14          2.28.3.1-1       The Evolution MIME message handlin
ii  libdbus-1-3             1.2.24-1         simple interprocess messaging syst
ii  libdbus-glib-1-2        0.86-1           simple interprocess messaging syst
ii  libebackend1.2-0        2.28.3.1-1       Utility library for evolution data
ii  libebook1.2-9           2.28.3.1-1       Client library for evolution addre
ii  libecal1.2-7            2.28.3.1-1       Client library for evolution calen
ii  libedataserver1.2-11    2.28.3.1-1       Utility library for evolution data
ii  libedataserverui1.2-8   2.28.3.1-1       GUI utility library for evolution 
ii  libegroupwise1.2-13     2.28.3.1-1       Client library for accessing group
ii  libenchant1c2a          1.4.2-3.6        a wrapper library for various spel
ii  libexchange-storage1.2- 2.28.3.1-1       Client library for accessing Excha
ii  libfontconfig1          2.8.0-2          generic font configuration library
ii  libfreetype6            2.3.11-1         FreeType 2 font engine, shared lib
ii  libgconf2-4             2.28.1-3         GNOME configuration database syste
ii  libgdata-google1.2-1    2.28.3.1-1       Client library for accessing Googl
ii  libgdata1.2-1           2.28.3.1-1       Client library for accessing Googl
ii  libglade2-0             1:2.6.4-1        library to load .glade files at ru
ii  libglib2.0-0            2.24.0-1         The GLib library of C routines
ii  libgnome-desktop-2-11   2.28.2-1         Utility library for loading .deskt
ii  libgnome-pilot2         2.0.15-2.4       Support libraries for gnome-pilot
ii  libgnome2-0             2.30.0-1         The GNOME library - runtime files
ii  libgnomecanvas2-0       2.30.1-1         A powerful object-oriented display
ii  libgnomeui-0            2.24.3-1         The GNOME libraries (User Interfac
ii  libgnomevfs2-0          1:2.24.3-1       GNOME Virtual File System (runtime
ii  libgtk2.0-0             2.20.0-2         The GTK+ graphical user interface 
ii  libgtkhtml-editor0      3.28.3-1         HTML rendering/editing library - e
ii  libgtkhtml3.14-19       3.28.3-1         HTML rendering/editing library - r
ii  libgweather1            2.30.0-1         GWeather shared library
ii  libhal1                 0.5.14-2         Hardware Abstraction Layer - share
ii  libical0                0.44-3           iCalendar library implementation i
ii  libice6                 2:1.0.6-1        X11 Inter-Client Exchange library
ii  libldap-2.4-2           2.4.17-2.1       OpenLDAP libraries
ii  libnotify1 [libnotify1- 0.4.5-1          sends desktop notifications to a n
ii  libnspr4-0d             4.8.4-1          NetScape Portable Runtime Library
ii  libnss3-1d              3.12.6-2         Network Security Service libraries
ii  liborbit2               1:2.14.18-0.1    libraries for ORBit2 - a CORBA ORB
ii  libpango1.0-0           1.28.0-1         Layout and rendering of internatio
ii  libpisock9              0.12.5-2         library for communicating with a P
ii  libpisync1              0.12.5-2         synchronization library for PalmOS
ii  libpopt0                1.15-1           lib for parsing cmdline parameters
ii  libsm6                  2:1.1.1-1        X11 Session Management library
ii  libsoup2.4-1            2.30.0-1         an HTTP library implementation in 
ii  libsqlite3-0            3.6.23.1-1       SQLite 3 shared library
ii  libstartup-notification 0.10-1           library for program launch feedbac
ii  libusb-0.1-4            2:0.1.12-14      userspace USB programming library
ii  libx11-6                2:1.3.3-3        X11 client-side library
ii  libxml2                 2.7.7.dfsg-2     GNOME XML library
ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime

Versions of packages evolution recommends:
ii  bogofilter               1.2.1-2         a fast Bayesian spam filter (dummy
ii  evolution-plugins        2.28.3-1        standard plugins for Evolution
ii  evolution-webcal         2.28.0-1        webcal: URL handler for GNOME and 
ii  gnome-desktop-data       2.28.2-1        Common files for GNOME desktop app
ii  gnome-pilot-conduits     2.0.15-1.2      conduits for gnome-pilot
ii  spamassassin             3.3.1-1         Perl-based spam filter using text 
ii  yelp                     2.30.0+webkit-1 Help browser for GNOME

Versions of packages evolution suggests:
pn  bug-buddy                     <none>     (no description available)
ii  evolution-dbg                 2.28.3-1   debugging symbols for Evolution
ii  evolution-exchange            2.28.3-1   Exchange plugin for the Evolution 
ii  evolution-plugins-experimenta 2.28.3-1   experimental plugins for Evolution
ii  gnupg                         1.4.10-3   GNU privacy guard - a free PGP rep
ii  network-manager               0.8-1      network management framework daemo

-- debconf information excluded

$ gdb evolution
[…]
(gdb) t a a bt full

+ Trace 221400

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.