The cooling fan on my daughter's 3000 started doing the jet engine thing some time ago, but she didn't really bug me about it until last week (well, actually my wife started bugging me).

 

I e-mailed tech support on Tuesday evening, got the automated response Wednesday, to which I replied immediately (I had already narrowed it down). Later that evening, they e-mailed me that they would send someone out. The guy called Thursday, came out Friday evening and replaced the fan in about five minutes.