See this post PS3 media center finally working with mediatomb
I've ditched mediatomb, it was way to hard to get to work, and manually editing scripts/config files was a hell.
I'm now using ps3mediaserver.
I downloaded the zip file, extracted to a folder, and fired up ./PMS.sh
I had to force it to use eth1 and a specific ip of eth1 to make it work.
It stream almoste all mkv/iso files without problems and ofc divx/xvid.
But in general Sony/PS3 is a crappy DLNA client, my samsung TV works much better and gives much better error messages.
