software center crashes with segfault

[demopahom]

Binary package hint: software-center

1) Description: Ubuntu Natty (development branch) Release: 11.04
2) Installed: 3.1.23.2
  Candidate: 3.1.23.2
  Version table:
 *** 3.1.23.2 0
        500 http://ca.archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status

3) ran a daily update on mar 10th +-3 days and discovered that I cannot open software-center anymore, the --debug output:

4)
2011-03-12 18:36:47,546 - softwarecenter.distro - DEBUG - get_distro: 'Ubuntu'
2011-03-12 18:36:47,711 - softwarecenter.performance - DEBUG - TIME loading app.py imports: 0.231338977814
2011-03-12 18:36:47,732 - softwarecenter.app - DEBUG - query for the update-database exception 'org.freedesktop.DBus.Error.ServiceUnknown: The name com.ubuntu.Softwarecenter was not provided by any .service files' (probably ok)
Segmentation fault (core dumped)

the bug remained after today's update.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: software-center 3.1.23.2
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic i686
NonfreeKernelModules: wl
Architecture: i386
Date: Sat Mar 12 18:42:55 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110216)
ProcEnviron:
 LANGUAGE=en_CA:en
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: software-center
UpgradeStatus: Upgraded to natty on 2011-03-03 (9 days ago)