did you get anywhere with this?
as i think i have the same problem, i have worked with samsung to reinstall several of my screens and does not fix the problem, if i take the screens off the network and publish content to then via a direct network cable and leave them off the network they are fine, plug them into the network and they crash within a minute, applies to all 6 of my screens, something on my LAN is upsetting it.
if you have any info that would be great.
thanks