One thing I observed is this seems to happen more often if I change the volume soon after opening Rhythmbox and just after starting to play a track. Perhaps it doesn't like a change in volume at the same time a lot of other things are going on, such as trying to get a bunch of data streamed.
I see a similar issue in Lucid, up to date as of yesterday's updates.
In syslog I see this at the time of the crash. I included the pulseaudio ratelimit message just before, in case it is relevant.
Jul 28 12:28:51 consected-sv1-001 pulseaudio[1670]: ratelimit.c: 130 events suppressed x11-2.0. so.0.2000. 1[110000+ 93000]
Jul 28 12:29:17 consected-sv1-001 kernel: [15882.976141] __ratelimit: 6 callbacks suppressed
Jul 28 12:29:17 consected-sv1-001 kernel: [15882.976155] rhythmbox[30966]: segfault at 0 ip (null) sp b233e16c error 4 in libgdk-
One thing I observed is this seems to happen more often if I change the volume soon after opening Rhythmbox and just after starting to play a track. Perhaps it doesn't like a change in volume at the same time a lot of other things are going on, such as trying to get a bunch of data streamed.
Phil