hey Mike, it likes to run hot. My A1200's "hot spots" are just where the expansion card is, andwhere the HD is.
I worry TOO MUCH about amiga overheating, so I always keep it cool. I have a small cooling fan around that I put so teh A1200 gets all the fresh air it needs. Runs mega cool for hours. So far I have put it in an 8 hours shift while working, and it barely got warm using this method.
I wouldn't risk it as Retroman does. But that's just me.