hi Rob,

I have been experiencing the same issue on my second machine (the one that runs 4x copies of wow - 2x on each monitor) after 2-3 minutes the machine reboots, I thought at first it was an issue with my machine.

I have tried the following run keyclone as normal to start the 4x wow windows up - leave it running and the machine reboots once the instances have fully loaded into the game.

If i start the instances with keyclone running - log in as normal and before selecting the character to load, i closed keyclone the 4x instances load up, but the machine still reboots after 5-10 minutes. (so removes keyclone as the suspect)

I recently updated my pc via windows update, so i dont know if this has any relevance to the problem.

there is nothing obvious in the event viewer

running Vista64 home premium. 8GB ram, Q6600 and Nvidia GX260.

One instance via Keyclone seems stable - could be a GFX driver issue - will restore earlier driver later on this morning to check