Hi all. Received my MB last Thursday evening. Worked fine, until I installed the new HD (Seagate 7200/100 Momentus). Since then, I installed Logic Pro at the weekend and put the MB back in my bag after shutdown. When I took it out again it was red hot and the fan was on full. This happened a few more times on the same day and I think it had something to do with the bag I put it in NOT being that well ventilated (it has not happened since - I have not used the bag). Anyway, since this happened the fan now comes on all the time, straight from it being switched on (before the Apple logo even appears on the grey boot-up screen). I don't think this is Spotlight indexing everything either, since I have used it for over 12 hours and I think that would have finished by now. I'm inclined to think this is a problem with the thermal greasing, or at least something to do with the thermostat. On CoreDuoTemp the machine runs at 38 C to start with and around 55 C once I start working. Any ideas would be appreciated. Dave.