Comment 6 for bug 669132

I tested SIGTERM and SIGKILL, in neither pogo saves the playlist. From what I found on the internet, Ubuntu sends SIGTERM then SIGKILL, so you could trap SIGTERM, using something like this: http://ubuntuforums.org/showthread.php?t=1436304

I made a video of my test:
https://dl.dropbox.com/u/10732001/signal.ogv
(9 is SIGKILL and 15 is SIGTERM)

This may be useful:
http://www.gnu.org/s/libc/manual/html_node/Termination-Signals.html

I hope this helps