erm... guys... the only line he was mentioning to be insulated was the one feeding the block... not the return line... the return line is the copper one to help dissipate heat into the air all of the way back. Good logic but in actuality the only problem is that the water in the copper return line is probably moving to fast for the pipe to be effective.. only problem with insulating the feed line is that it won't really do anything... the case isn't warm enought to heat the water in the feed pipe especially since the water in the feed line should be very close to ambient temps anyway... unless u were chilling the water... then u might want to insulate it...
Just my $0.02
Cyph3r
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