Comment 2 for bug 786494

When I've submitted this bug, I didn't have libcanberra-gtk0 and libcanberra-gtk3-0 installed, but trying to get this to work, I've installed it and Sysmonster still doesn't work. By the way, you should add those as a dependency for the package in the PPA.

I already had gir1.2-gtk-2.0 installed.

Here are the outputs of the commands you requested:

andrei@andrei-desktop:~/gnome-shell/install/share/glib-2.0/schemas$ apt-cache policy libcanberra-gtk0
libcanberra-gtk0:
  Installed: 0.28-0ubuntu3
  Candidate: 0.28-0ubuntu3
  Version table:
 *** 0.28-0ubuntu3 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status

apt-cache policy libcanberra-gtk3-0
libcanberra-gtk3-0:
  Installed: 0.28-0ubuntu3
  Candidate: 0.28-0ubuntu3
  Version table:
 *** 0.28-0ubuntu3 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status

andrei@andrei-desktop:~/gnome-shell/install/share/glib-2.0/schemas$ apt-cache policy gir1.2-gtk-2.0
gir1.2-gtk-2.0:
  Installed: 2.24.4-0ubuntu2
  Candidate: 2.24.4-0ubuntu2
  Version table:
 *** 2.24.4-0ubuntu2 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status