wow I really need to check things before I post them.It should have read : Has this happened to anybody else ? I was running a song in Logic after I had changed the DFD settings in most of the NI-Kompakt instruments, about 15 minutes later the screen had turned to a mass of pink and blue lines and that was the END of the G5, it wont reboot ??? Im doing hardware tests which are all passing so it looks like a complete OS installation again, yet the screen is barely visible as IF the graphics card had died. I think Ill only reinstall upto Logic 7.1 !