Hey everyone! I have a quick question. The last few days (when waking my imac from sleep) I get this loud noise from the computer. It usually lasts for a few minutes, and eventually goes silent. I think it's the fan, but wanted to get some input from you guys first. Below is a link to a youtube file (recorded some audio on my iphone)... http://www.youtube.com/watch?v=6iwN5l9e5vI If it is the fan, do you think it just needs a clean or something? I'm replacing this imac when the new one comes out, so probably won't spend alot of money. However, it would be nice to get this noise stopped! Thanks for the help.