First of all, I want to thank everyone that has posted here about samsung tv's and getting AllShare to work. I bought a 40LC630 this weekend, and I was about an hour away from going out to buy a pc to install XBMC on to play my media collection, when I decided to try this setup out. It's worked great so far.
Currently i'm using serviio (latest version) on a linux machine, and streaming all of my media over the lan connection to the TV. Basically all of it works right out of the box, except a few things. All the AVI's and MPG/MP4/M4V files I have seem to work. The only exception is MKV's. I'd say 90% or so work, but a few seem not to. All of the ones that don't are 1080p files, although not all 1080p files don't work. Some are fine.
So my question is basically, has anyone encountered this? If you know how to fix it I'd love to hear, but honestly I'm more interested in what it is that causes some to not work. They play fine on my computer using VLC and XBMC, and I am not sure what they have in common that is causing them to fail.
Any info would be appreciated. If you have any questions I can answer that would help diagnose the problem, let me know.