wow man i heard that 20 percent of xbox's are shipped without a Fan on the HS, those are the ones that get the 3 ring. Thats pretty bad, but you can check by getting a camera with flash and taking a pic through the vent on top of the xbox. But me personaly i dont have any console systems.
I tried taking a photo and it was too hard lol didn't work for me. Also, do you mean 20% of the X360's in retail don't have the fan? because I thought the updated X360's were all updated and shipped together.