This may be a bit off topic, but I've just bought and installed a new GTX 260 and only one of the fans work. I think it's a mechanical problem - it wobbles and clonks because the plastic fan itself is not attached to the axle (I presume it is meant to be). Hopefully the place I bought it from will be nice about it and replace the card. If not - are these things DIY repairable? Incidentally, I can honestly say I don't think I manhandled the card in a way likely to break stuff. I was quite careful about how I held it - but I suppose I can't be absolutely 100% certain. How hard is it to break fans with a careless grab? Has anybody done that?