Yikes! Good thing I have Applecare still. What is "fsck"? If it did turn out to be the logic board, does anyone know if can Apple still fix/replace that on my cube? -Marty > Hi , > > I have installed jaguar on about 14 computers without a problem. But > last month I had the same problem you mention on a new imac. Same > errors etc. I got on with apple and we both decided the problem was > serious after checking the ram, disk utility etc and running fsck . > On sending the computer back they found that the logic board was > bad.!!! It was heating up So check with any utilities you have access > to.