- The guy (in this thread, don't remember his nick) put the fan on top of the heatsink (he didn't opened it).
- I have seen a A600 ribbon half "burnt" because of the heat of a 68030.
What I think is that, with the time, the heat is going to dry the cable.
My ACA630 is runing very hot, so hot that you can't handle the finger more than 2 seconds on it.
Indeed Jens replied about that.