Followed the automatic uninstall proceedure and update of new powerdesk. System shows no interrupt issues. Darkstone locks periodically with sound repeating. Works fine with the SLI voodoos, switching to the G400 repeats the lockup fairly quickly.
As a side note the technology demo seems to lock at 1600x1200 also.
As a side note the technology demo seems to lock at 1600x1200 also.