I would also be concerned about the amount of ram he has, irregardless of other people's problems...they might be unrelated. I would also suggest that he get SP3.
Part of the problem with an internal graphics card is that it uses some of that ram as well which could be causing problems.
It's kind of difficult to say that this is a problem with the sim since most of us do not have that problem. In order to find out why that is happening on those few machines one would have to see what is running in the background, as well as what hardware each of them is running, etc. Kind of hard to diagnose those kind of problems otherwise...
He should try to shut down any nonessential programs and processes and see if that helps any.
Anyway, I hope he gets the problem solved somehow.
