Comment 70 for bug 479296

I have a similar issue. System freezes. Last lines in messages file are:

May 3 17:50:46 bar-prec-m4300 pulseaudio[2354]: ratelimit.c: 392 events suppressed
May 3 17:51:15 bar-prec-m4300 pulseaudio[2354]: ratelimit.c: 405 events suppressed
May 3 17:57:31 bar-prec-m4300 pulseaudio[2354]: ratelimit.c: 425 events suppressed
May 3 18:01:53 bar-prec-m4300 pulseaudio[2354]: ratelimit.c: 406 events suppressed
May 3 18:03:03 bar-prec-m4300 pulseaudio[2354]: ratelimit.c: 430 events suppressed
May 3 18:09:15 bar-prec-m4300 pulseaudio[2354]: ratelimit.c: 412 events suppressed
May 3 18:11:37 bar-prec-m4300 pulseaudio[2354]: ratelimit.c: 397 events suppressed
May 3 18:14:59 bar-prec-m4300 kernel: imklog 4.2.0, log source = /proc/kmsg started.
May 3 18:14:59 bar-prec-m4300 rsyslogd: [origin software="rsyslogd" swVersion="4.2.0" x-pid="807" x-info="http://www.rsyslog.com"] (re)start
May 3 18:14:59 bar-prec-m4300 rsyslogd: rsyslogd's groupid changed to 103
May 3 18:14:59 bar-prec-m4300 rsyslogd: rsyslogd's userid changed to 101
May 3 18:14:59 bar-prec-m4300 kernel: [ 0.000000] Initializing cgroup subsys cpuset
May 3 18:14:59 bar-prec-m4300 kernel: [ 0.000000] Initializing cgroup subsys cpu

I have a SigmaTel STAC9205 Sound Card. Worked fine with Ubuntu 9.x now I'm on 10.04, but with a clean install.
Dell Precision M4300.

Random, but a complete freeze. Unable to SSH and no mouse movement. I'm assuming this could be audio.