Pulseaudio crashes after several minutes of use

[Yotam Benshalom]

Binary package hint: pulseaudio

After a few minutes of using pulseaudio on 32-bit jaunty, it crashes. This happened with various apps, among them Iango )gnome-games), multimedia-systems-selector, and skype.

Sometimes, running after an initial crash pulseaudio -k and then pulseaudio solves this.
At other times even that does not help, and I get the message:

yotam@ubuntu:~$ pulseaudio
I: caps.c: Limited capabilities successfully to CAP_SYS_NICE.
I: caps.c: Dropping root privileges.
I: caps.c: Limited capabilities successfully to CAP_SYS_NICE.
N: main.c: Called SUID root and real-time and/or high-priority scheduling was requested in the configuration. However, we lack the necessary privileges:
N: main.c: We are not in group 'pulse-rt', PolicyKit refuse to grant us the requested privileges and we have no increase RLIMIT_NICE/RLIMIT_RTPRIO resource limits.
N: main.c: For enabling real-time/high-priority scheduling please acquire the appropriate PolicyKit privileges, or become a member of 'pulse-rt', or increase the RLIMIT_NICE/RLIMIT_RTPRIO resource limits for this user.
E: alsa-util.c: snd_pcm_avail_update() returned a value that is exceptionally large: 3221221220 bytes (18260891 ms) Most likely this is a Linux bug. Please report this issue to the ALSA developers.
Soft CPU time limit exhausted, terminating.
Hard CPU time limit exhausted, terminating forcibly.
Aborted

Attached are pulseaudio -vv output during an initial crash and lspci output.
I will happily contribute any extra information needed.

[Yotam Benshalom (benshalom)]

This seems similar to bug #319118 and bug #329920.
My pulseaudio version is 0.9.14-0ubuntu9.