Hi, Cal
Thanks for the reply.
I think my vote's also going for a Windows glitch rather than SQLyog as I have been unable to replicate the behaviour on a Win98 machine this morning.
They call me Dr Format in the office as I always go for separate Windows and data partitions and do a clean reinstall when Windows ****s up. Nevertheless, your 'overload' suggestion might be more suitable for my student.
I think Linux is probably not what the doctor ordersed for him, but I'm seriously considering myself so thanks for the web link.
Cheers
Jez