Hi, I have an old 1gen macbook as described in the subject line, and I want to use it as a media center. I bought it as soon as macbooks were released and it's got 2gb RAM. I am currently running plex on it and it's hooked up via hdmi to my 46" samsung tv, and the movies are located on a brand new (as of yesterday) 1tb WD mybook external harddrive. When I am playing movies I am experiencing a bit of lag, and the movies seem a little choppy. Is this due to my macbook being too slow? The specs are simply too bad? Is there anything I can do to fix this besides buying a mac mini? Thanks.