I played this G30 last night. Crafty showed me where I lost in the endgame, but I feel like I could have done better in the middlegame, even though there are no obvious tactical errors:

[Event "rated standard match"]
[Site "Free Internet Chess Server"]
[Date "2007.11.30"]
[Round "?"]
[White "pompeynz"]
[Black "gorckat"]
[Result "1-0"]
[WhiteElo "1627"]
[BlackElo "1508P"]
[ECO "C53"]
[TimeControl "1800"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d5 6. exd5 Nxd5 7. h3 O-O 8. O-O a6 9. b4 Ba7 10. Bg5 Nf6 11. Re1 Re8 12. Qb3 Be6 13. Na3 b5 14. Bxe6 Rxe6 15. Rad1 Qe7 16. Nc2 Rd8 17. Ne3 Bxe3 18. Rxe3 h6 19. Bh4 g5 20. Bg3 e4 21. dxe4 Rxd1+ 22. Qxd1 Nxe4 23. Nd4 Nxd4 24. Qxd4 Nxg3 25. Rxe6 Qxe6 26. fxg3 Qe1+ 27. Kh2 Qe7 28. Qa7 Qd6 29. Qd4 Qxd4 30. cxd4 Kf8 31. g4 Ke7 32. Kg3 Kd6 33. Kf3 Kd5 34. Ke3 c6 35. Kd3 f6 36. g3 Kd6 37. Ke4 Ke6 38. h4 gxh4 39. gxh4 f5+ 40. gxf5+ Kf6 41. h5 Kg5 42. Ke5 {gorckat resigns} 1-0

Next time, I'd play 5. ... d6, since I seem to have left book according to NCO.

Crafty at move 34: 34. ... Kc4 35. a3 Kb3 36. Kd3 Kxa3 37. Kc3 Ka4 38. d5 a5 39. bxa5 Kxa5