Comment 5 for bug 549822

The end of the apt.log shows this:

Setting NOT as auto-installed (direct dep of pkg in APT::Never-MarkAuto-Section)
Starting
Starting 2
Investigating ubuntu-desktop
Package ubuntu-desktop has broken dep on libsdl1.2debian-pulseaudio
  Considering libsdl1.2debian-pulseaudio 2 as a solution to ubuntu-desktop 0
  Re-Instated libsdl1.2debian-pulseaudio
  Re-Instated ubuntu-desktop
Investigating libsdl1.2debian-alsa
Package libsdl1.2debian-alsa has broken dep on libsdl1.2debian-pulseaudio
  Considering libsdl1.2debian-pulseaudio 2 as a solution to libsdl1.2debian-alsa 12
  Added libsdl1.2debian-pulseaudio to the remove list
  Fixing libsdl1.2debian-alsa via keep of libsdl1.2debian-pulseaudio
Investigating ubuntu-desktop
Package ubuntu-desktop has broken dep on libsdl1.2debian-pulseaudio
  Considering libsdl1.2debian-pulseaudio 2 as a solution to ubuntu-desktop 0
  Removing ubuntu-desktop rather than change libsdl1.2debian-pulseaudio
Done