Ok guys, these are really two separate problems that may have the same cause. My Macbook Pro is the current top spec model (2.5GHz i7, 16GB RAM, 2GB GT 750M, 512GB SSD) and is only about a month old. My default browser is Chrome. The first problem is the overheating. It seems to happen fairly often when watching YouTube videos. I've got iStat Menus so I can monitor a few things and notice that my temps can go up as high as 95C when watching youtube videos. The fans tend to flare up too and it gets a little noisy. Its a fairly hot night tonight and its running at 53C with two tabs (this and google) open as well as activity monitor open. I've just uninstalled Flash, but I haven't given it enough of a test run to see what happens. I have Youtube set to play HTML5 videos when possible anyway. Is this overheating common? Is there a solution that I can do myself? The second problem is the lagging. I has only happened a handful of times, but it forces me to restart my Macbook when it does. Basically, youtube videos go out of sync with the audio, the dock and everything else becomes laggy and nothing I do seems to fix it other than a restart. Sometimes quitting Chrome fixes it, but it happens very shortly after opening it again. To be honest, it hasn't happened in a while, but its still a pain in the ass. My old 2011 Macbook Pro never had any of these issues, but that thing bit the dust with the whole GPU failure thing.