What DLNA server to choose? [closed]

What DLNA server program should I choose and how do I set it up? It is an absolute requirement that it doesn't take a lot of resources since it will be running on a 500 MHz machine.

There seems to be quite a few server programs and I don't have any experience with these userfriendly auto-detecet protocols/services.

Btw, the server doesn't have a GUI...

I've switched from MediaTomb (which has been crashing all over the place) to MiniDLNA.
It's lighter, no interface at all and hasn't crashed on me yet. Scans fast too.

MediaTomb?

Quite popular and only a web interface to speak of. It also does on-the-fly transcoding but you may need to disable that or your little 500mhz server might explode.

Edit

MediaTomb is unsupported since 2017-04-03.
They direct users to Gerbera, which is built upon MediaTomb.

I'm a fan of ushare myself: GeeXboX uShare UPnP A/V Media Server HomePage

I'm pretty pleased with PS3MediaServer on Ubuntu 11.10. Ubuntu has a help page for it at Ubuntu Documentation - Ps3MediaServer. Installation is easy, adding files is easy and it works great. Don't let the name fool you, you don't have to have a PS3 to enjoy this. And best of all, it's all handled through a graphical GUI.

Plex recently appeared in the Ubuntu Software Center. I have used their server for two years and recommend it.