I'm not willing to comment on the northbridge (I'm just running a lapped Blue Orb on an A7V133), but I know what you mean about improper mounting.
My system was running great, then I got one of the 198mhz "new SE" Radeons, and moved the waterblock to install. My waterblock is polished and I use a fine amount of Arctic Silver II. Well, lets just say 60c is lucky, I've got a scorch mark on the warranty sticker, and of course one AMD keychain.
I think the Danger Den mount is awesome, but I used stiff hose (braided PVC) and it rocked the block on an edge. Saved 1.50/ft over silicon to buy a new CPU

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