I run both my June '09 Unibody Macbook Pros on top of their respective incase sleeves so I'm not always putting them down or sliding them around my oak desk. So far, they've run cool and given the both computers a small boost as far as being eye level. Fans haven't kicked in ever and I leave enough space at the vents so that the case doesn't fold over them. They shut off before they totally overheat anyways, right? Anyone else do this...? good idea..? any foreseeable problems?