yup, i agree... with one small caveat: messing with the disk cache's default setting which is calculated (to a large extent, there are other factors no doubt) by the amount of physical RAM you have, can truly bring stability problems. Making it LARGER would seem to be OK and may truly be OK for most/some users, but SMALLER... i'd really think twice before i'd make my disk cache smaller. I KNOW that you said to make it LARGER and NOT SMALLER, JMS in Tejas...
what i have said here may seem elementary, but as you say, confusion/misinformation often reigns supreme, and conversely, God resides in the details... correct details.