Yay - it works. I've got an OpenSim up and running on my own Linux box. I created user accounts for my kids and wife. My daughter is too young for Second Life or even the teen grid, so she's happy her daddy created his own place for her. It's just that, well, it's a bit lonely there, so I'll have to let her girlfriends in as well, I'm afraid.
So what's up next? Dressing up the place a bit, importing other stuff, like a male body shape for instance :-)