broken record syndrome

Hi

I have done a few installations without issue of moc and was
surprised recently to encounter a difficulty

On my past two installations I installed moc on Debian
Squeeze Foxconn nettop systems

The current system, a Foxconn nt i1500 is the subject of
my post.

I first installed the system with Debian Wheezy (7.1)
There is nothing else on the box except Debian and mocp

moc is configured to play an internet radio stream.

After a few hours, the system emits a "broken record"
sound : as if you are hearing the same sound repeated
endlessly, an uninterrupted 'stutter' if you will

I couldn't access the box over the network, and the symptom
could be resolved simply by unplugging and replugging the
network cable; similar I guess to resetting the network
interface (Realtek).

I tried configuring the system using the WLAN interface
(Intel) but the result was the same.

I reinstalled the box with Debian Squeeze (6.07)
and the result was the same, although the cable disconnect
method didn't change matters and this time I could still
access the system over the network

Any ideas ?

thanks

yann