So I just did a FRESH install of OS X 10.9 and installed only a few apps (chrome, VLC 1.1.12, iStatMenus and Vox). I'm running an early 15" 2011 MBP @ 2.3ghz with a 6750M gpu. I've got 4 tabs open in Chrome and am playing a 720p MKV file via VLC and my temperatures are between 70-80C. Is this NORMAL? I just had my logicboard replaced due to the GPU frying on me and cost me a good chunk of money. I'm trying to keep the MPB as cool as possible but these temps in 'normal' usage are pretty damn high. My idle temperatures in Snow Leopard were 33-34C at boot with some applications running in the background (rightzoom, istatmenus, fontexplorer, xtrafinder, bettertouch tools and trim enabler).