Only 18 hours for me,but to be fair it's only cause I got DCS A:10 the same week and I've been throwing myself into that with a fair bit of gusto so I can get my head around all the systems involved with that plane.
I really do want to play it though,I'm one of the lucky ones were the patch's have made the game very playable for me,very smooth with nice FPS,I just gotta tear myself away from that bloody awesome A-10