I have a Samsung TV that can be and is connected via DLNA with my XP machines wirelessly.

There is NO WAY I can make it see my Ubuntu machine though.
I have the 10.04 and I have tried almost all the available programs for this OS.
Name it and I have tried it: Mediatomb, ushare, PS3MediaServer and others that I cannot recall right now.
These programs are installed with no errors and they look like they run correctly, their web interfaces work fine but that's all.

None of them has been ever found by the TV, -but it can see the native Samsung program PC Share runnning on the XPs.-

What's the problem with my Ubuntu system and it cannot be recognised by the TV?
It's not that it won't play this or that file. It's that it won't see the server AT ALL.

Any ideas?