Well if your cpu isn't giving you stability issues i wouldnt worry about it.
If it is, get something better (and quieter).
There are lots of large and copperish heatsinks around on the market, many better than the volcano.
<A HREF="http://www.dansdata.com" target="_new">http://www.dansdata.com</A> has a huge list of them.
<b>Lead me not into temptation.
I know the way myself.
Mr no integrity coward.</b>