It never fails.. I always seem to get defective fans when I order them online. Recently got two Swiftech Helix fans and both are making noises.. one of them is a horrible grinding noise. I also got a Bitfenix Pro 200mm fan to replace my Megaflow and it was awesome for about 15 minutes then got some sort of loud tick noise that follows the speed of the fan. Anyone else have my kind of luck with fans?