The amount of SSD space being used just depends on how many videos i have loading. I have 12gigs of ram in my system. I tried using a program called Spacesniffer the other night and loaded a video checked that space was being used, I then loaded the program. It shows you the filesizes of everything on your drive in a square grid bigger squares for bigger files, I then screenshot the program closed the YT video and reloaded the program and all files were exactly the same. It isn't a issue of permissions or hidden files. I'm really stumped here, I've looked up a way to find YouTube's stored videos on your hard drive because copying those files is a common way to download the YouTube video without any additional software however on my system there are no files there and nothing ending with the extension .flv