I have started running my own Opensim server so now i can build as much as i want. It is one Second life island and perhaps i make my own mini grid. A few islands a mini world of mine., all mine.
Of course its a reverse engineering server so it do not have all functionality as the Linden lab grid have, but it works really good anyway. On the picture you can see my first island running on a OpenSuse 10.3 server. I do a test on a OpenSuse 10.2 amd64 server to, but it do not work as well as the 10.3.
I also have a Multiverse server up and running but it do not work very well. I do some further work on it to see if i can speed it up. The good thing with Multiverse is that it comes with a lot of tools for creating new worlds.