Mac OS X: Mavericks causes CPU fan to run at full speed
I’ve noticed that, after upgrading from Mountain Lion to Mavericks on my borrowed MBA, my fan was running a lot… and loudly. As in, moving my mouse caused the fan to run at full speed.
I tried rebooting (and unchecking “reopen apps at startup”), which helped for about 5 minutes.
I tried closing down apps (which helped; especially keeping Mail closed helped a lot). But even watching a YouTube or playing Music on Google Music caused the CPU fan to start spinning way louder than before.