So a friend of mine just picked up a Mini and a MiniStack external hard drive. The MiniStack was fine the first day he used it - he said he copied some stuff onto it, etc. The next day, I was helping him setup the Mini and the drive worked for 20 minutes or so, and then the fans kicked in super loud. I mean, SUPER loud. Like a tortured cow or something. The fan sounded broken to me, but after it cooled off, they went away and it was fine for another hour or so. Then, he called me last night saying the fan came on and it sounded just as bad again when he used it the next day. I've looked online and seen some posts about fan noise with the MiniStack, and people saying it's VERY loud, so now I can't figure out if this is the normal noise it makes, or if this unit's actually broken. Any help?