So i've noticed something odd ever since i installed 10.10, and through all the updates. instead of idling around 52-55 c before yosemite, my computer now idles around 65c. Now that in itself is not that problematic, i realize computers get old, OS's get more demanding. I have a macbook pro 2010, 2.4 ghz, 8 gb ram, ssd, and the usual. I realize its an old computer, but for my basic usage which is web browsing, word excel its fine. The problem is after 10.10 i noticed that even seemingly simple apps, like microsoft autoupdate, or the mac app store, will take up 100-150% cpu. With say a torrent downloader, or actually using excel, i can imagine that kind of cpu usage, but i'm just not sure how a download from microsoft or the app store can end up with such high cpu usage. so my question is, do you think maybe a reinstall would help? is this a change in the basic architecture of yosemite that makes it and the apps on it use far more cpu? or is my computer really getting that old that it cant handle simple things like safari or software updates without spiking to 150% cpu usage and 82c temps.