The Molex adaptor on my water-cooling pump has been detached for some time now, a fact I only realised when I opened the case just now to see why I was getting bluescreens every couple of hours in Win7, after a faultless performance using Vista. I assumed it was dodgy USB Wifi drivers (no room for a card in the system with Quadfire!) The loop, on my overclocked i7-920, was taking several hours to overheat to the point of bluescreens (high 80s), and even with a total pump-flow of zero, was never triggering the Thermtrip. Anyway, all sorted now. No damage, seems to be flying through Prime95 just fine (as I type this, in fact!). Will keep everyone posted. The moral of the story - if something's going wrong, CHECK! On a side-note, I'd like to thank Antec and XSPC for putting together kit that will keep an overclocked i7 stable for hours with no active cooling at all. Will