The 9.10 upgrade losing track of /boot and swap (What, uuid? never seen those uuids anywhere, honest! Wanna buy some slightly used /dev/sda* references? Fell off a truck!) and thus failing to boot was a bit painful.
A bunch of games suddenly growing scratchy/stuttery sound problems not evident in jaunty was more painful. Much debugging ensued.
Wondercure: apt-get remove --purge pulseaudio
... if only all social disorders were as easy to correct.