Not 100% sure of this but when I watch video or visit the Doc page of lay theme website I get 100%+ CPU usage from my MBP. Haven't tested on my personal site but I thought I'd give you a heads up if its something to do with the theme. Thanks.
ah yeah its probably because there are so many videos on the doc page. yeah my mbp gets really loud too if i watch for example an hd video in chrome in fullscreen -.-
has nothing to do with the theme though, cause laytheme.com is not made with lay theme :)