The board was purchased in the last couple of years; definitely not as far back as 2006. Also, Steljes have swapped the board for a brand new one and it made no difference.
Also, the problem doesn't always happen straight away. To be honest, whenever I've changed something like a driver or some hardware and then log on myself, it doesn't ever happen for me, but as soon as I leave and the teacher logs back on, it happens straight away for her. I heard someone saying that it only happens when they go out of Notebook and back in again.
I'm assuming your issue is constant?