I recently left for vacation, and when I came back yesterday, my computer was behaving quite strangely.
Now it will boot up fine, all is good, but the fan is loud, and constantly moving! This has never happened to me before, and I have no idea how to fix it.
Is it hardware or software? Either way, can I fix it on my own, or do I need to get a genius in on this? I'm running OS X Snow Leopard.