I had the exact same problem. I'm using Ubuntu 9.10 with latest updates on Asus EeePC 1000H.
Installing libsdl1.2-debian-pulseaudio and removing libsdl1.2-debian-alsa fixed the problem for now. This bug should get a bit more attention, since it seems that Hedgewars isn't the only program suffering from pulseaudio failure.
I had the exact same problem. I'm using Ubuntu 9.10 with latest updates on Asus EeePC 1000H.
Installing libsdl1. 2-debian- pulseaudio and removing libsdl1. 2-debian- alsa fixed the problem for now. This bug should get a bit more attention, since it seems that Hedgewars isn't the only program suffering from pulseaudio failure.