Grumble, grumble. The network connection to the machine room here is no-joy. Facilities Services was rewiring for the PC cluster - they must have botched something. I am trying to justify not going to the console to continue work...
This fellow is studying MD too! Cool stuff. Lennard-Jones systems are good toy problems - the interaction is simple enough so that you can run a fair number of atoms on modest equipment, but robust enough that you can learn all about the various statistical correlations that are important in MD.
Of course, the only real systems that L-J models well are noble gases, but hey - you can't have it all.