Odd problem I've just discovered. I have some really nice 3d models of spaceships, about 400-500 polygons each (I think) and I got them moving about in my space game, but they've started falling apart! For example, if they have two sets of wings (like an xwing), the top wing seems to go faster than the bottom wing and the ship loses it's shape. If I 'catch up' with the ship it reassembles itself - in other words, it hasn't actually fallen apart, it just looks like it has. I made a little program to check the models and they're fine, so I think it must be something to do with the lighting in my game or something. Could it be because my sun (the only lightsource) is set at a really long distance? It's not just a single wing, all parts of the ship seem to shift around, it's as though all the bolts keep falling off!