software center crashes ioerror when it opens

[Jonathan Kriebel]

problem:
$ software-center
2013-06-08 13:09:01,907 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2013-06-08 13:09:01,912 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True
2013-06-08 13:09:02,441 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
2013-06-08 13:09:02,623 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is None.
2013-06-08 13:09:05,319 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open()
Segmentation fault (core dumped)
j@kat-Lenovo-G450:~$ 2013-06-08 13:09:09,806 - softwarecenter.db.update - INFO - skipping region restricted app: 'Bulleti d'esquerra de Calonge i Sant Antoni ' (not whitelisted)
2013-06-08 13:09:10,217 - softwarecenter.db.update - INFO - skipping region restricted app: 'Comentarios Web' (not whitelisted)

1. $ lsb_release -rd
Description: Ubuntu 12.04.2 LTS
Release: 12.04

2. $ apt-cache policy software-center
software-center:
  Installed: 5.2.9
  Candidate: 5.2.9
  Version table:
 *** 5.2.9 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
        100 /var/lib/dpkg/status
     5.2 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise/main i386 Packages

3. I expected the software center to open

4. I opened the software center and it stops, errors with an ioerror, it doesn't load any packages.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: software-center 5.2.9
ProcVersionSignature: Ubuntu 3.5.0-32.53~precise1-generic 3.5.7.11
Uname: Linux 3.5.0-32-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.3
Architecture: i386
Date: Sat Jun 8 13:19:49 2013
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release i386 (20130213)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: software-center
UpgradeStatus: No upgrade log present (probably fresh install)