Comment 4 for bug 52445

That was a libcairo bug and it's fixed with this upload:

 libcairo (1.2.0-5ubuntu1) edgy; urgency=low
 .
   * debian/control:
     - don't require a directfb newer than the ubuntu package
 .
 libcairo (1.2.0-5) unstable; urgency=medium
 .
   * Rebuild against directfb 0.9.25 which has changed library and udeb
     package names from 0.9.24 that all earlier cairos were built against,
     and which are now removed. This should prevent Cairo from becoming
     uninstallable due to this change. Urgency medium due to this.
 .
 libcairo (1.2.0-4) unstable; urgency=medium
 .
   * Added patch cairo-bug-7494.patch (Closes: #378005)
   * Added patch cairo-bug-7514.patch (Closes: #380064)