Hi! I have a Mac Pro recently purchased that I use for video editing and I have been having a rather serious and very annoying problem. Using Final Cut Pro, I have been rendering a section of video and after a (variable) period of time, my scratch disk (internal SATA - came with the Mac Pro) just unmounts itself, causing FCP to crash out and I lose my render. I can only get the drive to mount again if I restart (or shutdown and start-up again). Is there anyone out there who has knowledge of this problem? I want to ask Apple to look at my machine, but I work at a large institution and the paperwork trail is huge, so it would be a last resort. Many thanks if anyone has any thoughts. ...Joe.