Oh well, after a bit of a marathon debug session I got the NeL libraries and the sample server/client up and running. Found a few things which I suspect really are bugs (rather than just dodgy setup on my side), so hopefully my fixes will get merged... Seeing as this is an open-source project with the majority of dev coming from a commercial house, be interesting to see how they respond to someone else telling them what they've done wrong ;) In the end the client ended up running at an average of about 8fps, not the speediest... in fact, slow enough that I double checked to make sure I was using accelerated GL libs. A look at the wireframe indicates that it's not doing any spiffy LoD stuff on the landscape, which seems hideously wasteful. Something like a progressive mesh seems in order ;) (Not that it'll affect me much, my first task will be to remove the landscape. Who needs it! Give me space dammit ;))