I have it running for quite a few hours now, playing mods from the CDRW Drive almost constantly and, it's only getting slightly warm now.
The areas that were getting hot were the Harddrive the CDRW and of course the CPU, but you could touch them. They were not hot enough to burn you.
I think the problem was poor ventalation, my A2508 RAM Expansion board don't help as it takes up a lot of space, also my 1084S sits on top of my 4000/40, but since fitting the case fan, things are a lot cooler!
The outer case always used to be warm to the touch, but now it stays cold.
:-)