Comment 1 for bug 659150

That might be interesting too:

[0]> apt-cache policy evolution
evolution:
  Installed: 2.30.3-1ubuntu6
  Candidate: 2.30.3-1ubuntu6
  Version table:
 *** 2.30.3-1ubuntu6 0
        500 http://de.archive.ubuntu.com/ubuntu/ maverick/main amd64 Packages
        100 /var/lib/dpkg/status