Hello,

I have the same problem since 9.10 release. The sound warps after 55 seconds. 
We have a Open source  program built on Pulseaudio and iTALC. It uses 
Pulseaudio for audio chat in classroom. The developer said us that the cause 
was : module-rtp-recv
to check that, on machine A we start : pactl load-module module-rtp-send and 
                      on machine B : pactl load-module module-rtp-recv
after 55s we get the trouble. 
I attach a record in wav format. I record only the 35 last seconds
If I restart recv module I get the same bug after 55 seconds.

It's very important to resolve this bug, because is impacting a lot of
machines. Our Project was downloaded more 2000 time, and we stay on
Ubuntu 8.10 hoping that the bug would be fix on 10.04 LTS, because we
can't install Ubuntu 8.10 on new machines.

We have another bug but I don't know if is the same module that is involved.
if on machine A we start : pactl load-module module-rtp-send and 
                      on machine B : pactl load-module module-rtp-recv
We can hear streaming sound on machine B after 5 seconds.
If we launch recv module before send module we can hear the stream immediately.

kind regards

Eric




** Attachment added: "recording track of streaming"
   http://launchpadlibrarian.net/48867739/test_pulse_rtp.wav.tar.bz2

-- 
pulseaudio multicast audio becomes inaudible
https://bugs.launchpad.net/bugs/569378
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