Sorry guys, I was not online at the time, so thanks to Miles and GSF for making me aware to this.
Trev is in the cinema, he will reboot the server tonight, they need it every so ofter, and the Linus server that this forum is on has not been rebooted for a few months now.
I run an optimisation and rebuild on the database tables and its seems to have sorted it for now.
Must admit, the Linux server is very good, but our IIS server never needs rebooting, but the Linux is faster.