When I watch Netflix on Safari or Chrome on OS X Snow Leopard (with the latest version of Silverlight), the computer gets fairly hot.
Is this a problem with the way Silverlight is programmed for OS X? I have tried a program called gxfCardStatus which allows you to choose which GPU you use, but I'm not sure Safari even has GPU acceleration. So maybe the problem is Silverlight is working the processor too hard?
Also, when I do other things, like watching Quicktime movies, my computer runs cool.
I'd like to hear some of your ideas. My last laptop (PC) never had a problem with Netflix instant stream.