theres nowt wrong with it. It was meant to come out in early 2007, it was delayed, its nearly 2008 now. So its later than schedule.
I dont have my very own copy yet, as I havnt had THAT much time lately, but enough to complete the SP, but I will definately buy it as I think its a great game, I can wait a little while for it to come down in price and for me to have more time on my hands though so Ill buy it when its a bit cheaper, online generally requires a few patches after release anyway.
As far as SP is concerned though, quality game.