If I remember correctly, it took about two months to Bioshock get cracked..... But you didn't hear that from me.....
About the DRM scheme. Ouch. It's like, pay for my game. And then the game will force you to return to me and show the receipt and the evidence that you haven't pirated it yet. Another case of pointing to every one who paid for their product a pirate.
.... And please, how many people here actually buy the game AND THEN put the game into a CD/DVD writer to give or sell to friends? Yeessh, they just download it. Cracked already..... I think the developers are missing the point.
Last thing, actually there are some very unique exceptions. Some games are STILL aren't cracked yet.