Hi Craig,
Thanks for getting back to me. I was really worried it had something to do with the system drive, as it was newly installed into my machine in december and leopard put onto it.
However i since found that it was the new g-drive q that i had hooked up to it after testing the drive on another machine. The data and discs in the drive are fine, but the bit that makes it talk to my machine have gone south.
Since disconnecting the drive all has been well but thanks for the info, much appreciated.
Thanks,
Chris.