Anyone else having any issues with your screen going black and having to reboot the computer?

Both on Saturday and Sunday I had issues where after about 45 minutes of playing suddenly my screen just went black and I get a message on the monitor saying "signal lost". I could still hear the FF music playing in the backgroud but there was no way to bring the game back up. The only thing I could do was force shut down the machine and reboot.

I'm not sure if it's an overall hardware issue or something related to FF. Prior to FF I played WoW up until July and never had any issue with getting a black screen.

I'm running Windows vista with a NVida Geforce 9800 video card and 6mb RAM. After the issue Saturday I made sure my graphic settings were all turned down to low, but I still had the black screen Sunday. I also made sure my video drivers were all updated.

Any help is appreciated.