S.T.A.L.K.E.R.: Clear Sky - NA Release Delayed

Shack News has posted a confirmation from Deep Silver that the Clear Sky prequel has been recalled from NA shelves following an alleged CD key mix-up. European release is unaffected:

The North American release of GSC Game World's S.T.A.L.K.E.R.: Clear Sky (PC) has been delayed "a few days" past the promised September 5 date, a representative from publisher Deep Silver confirmed with Shacknews today.

The slip stems from a manufacturing issue specific to the North American edition, with Deep Silver forced to recall all copies that have already shipped to stores. The issue is apparently a printing error that saw the game distributed without CD keys...

A new release date for North America is not yet available, though several online retailers have the title tentatively slated for September 15.