[dogma1138]

MSFT still sells security updates for Windows 2000, It would not surprise me if you'll peal enough layers in a large organization to find NT5/4 machines still there which require the sacrifice of 3 goats and a virgin every full moon to continue running which might still get updates from MSFT since that organization pays for the extended support.

The only thing that surprising in these stories is that MSFT is actually capable of providing support for products for such a long time, their ability to maintain information and transfer it to new employees must be unparalleled. The amount of documentation alone is probably enormous 12 years of 10000's of bugs for each specific version of each binary that's insane, especially considering that most companies out there will have issues supporting binaries which are 2 years old since they have no clue what exactly was going on with them back then.