Ok, so I used to use Caffeine to keep my old MBP. I will still use it but for work I have to download large files that takes a good amount of time and I am trying to figure out how to keep the Mac away but the screen off for a certain amount of time. For instance...3 hours showing on download and I am ready to go to bed, how can I kill the screen but let the download still run instead of burning the screen for no reason. I tried InsomniaX and that worked the first time but for some reason I cannot seem to get it to work again. When I come back to computer midway through the set time, it shows like InsomniaX is hung. Any help would be greatly appreciated.