Everyone should know that any hardware changes prompt the game to re-activate and there is a limit per key for activations. Uninstalling does not revoke the key. OS changes will also trigger the need for a re-activation. So basically if you change hardware or reinstall ~5 times you will now need to get the key unlocked or a new one issued - to which GSC and Valve keep referring you to the other with neither company doing anything to resolve it.

http://www.ipetitions.com/petition/stalkercsdrm/

We would appreciate a posting in your news to get this as much attention as possible. Gamers are being unfairly treated in the fight against piracy, we need to get this stopped.

Thanks!