Thanks guys!
For now, I used Lunch with a `killall pd` command executed every 10 minutes... that works for now. (but creates a periodic glitch)

Check out Lunch, the distributed process Launcher and watch dog. I wrote it with artistic installations and performances in mind. 
https://packages.debian.org/wheezy/python-lunch
http://code.sat.qc.ca/redmine/projects/lunch (I currently suffer from Git errors in this repository...)
Best,

2014-11-28 4:36 GMT-05:00 IOhannes m zmölnig <zmoelnig@iem.at>:
On 11/28/2014 01:13 AM, Alexandre Quessy wrote:
> Hello everyone,
> I am using [udpreceive] in a Pure Data patch on Ubuntu GNU/Linux 14.04, and
> it seems like I stop receiving OSC messages after a few minutes. I use
> mrpeach's pd-osc externals and the puredata and pd-iemnet Ubuntu packages.
>
> Do you guys know of issues with udpreceive that stops receiving? If so, do
> you guys have any workaround to suggest?

try using mrpeach's [udpreceive] implementation.
alternatively, try using iemnet from svn.

gfdsar
IOhannes



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--
Alexandre Quessy - 亚历山大 - ألكسندر
http://alexandre.quessy.net - Artiste en nouveaux médias
http://perte-de-signal.org - Membre de Perte de signal
http://sourcelibre.net - Développement logiciel et conception de sites Web
http://labalab.ca - Impliqué dans LabàLab - communauté de pratique en arts numériques