Didn't till now but looking at this site it seems like a waste of time. Not sure what there testing with but those temps suck.
http://www.pugetsystems.com/submerged.php
Ahh a 2nd look and they did improve the temps. They got it down from 88C to 45C but don't give to much info on what the test setup is and if its overclocked. So 45C really isn't that good if the cpu is not even overclocked.