Thats right corto, and my 4000 with a pentium cooler on top of the 68040 still hangs after 1 hour on. Yellow screen - have to switch off. I dont know if it's because of my masobochi 8 meg card or if its still because of the cpu.
All I know is that I will never put my Amiga towerized...
So I completely agree with you about the samantha board.
I also I'm looking at the uae-integration on Aros. I'm very atempted to make a small donation to them. I think Aros can be some sort of Linux to Amiga. And thats very great. :-)