Question: I hit the Level 20 cap and got the achievement but now in the pause menu stats and on Social Club it says I'm only Level 19. What can I do?
Answer: We have received some reports of stats tracking properly up to Level 20 (including the trophy/achievement) but then showing that the player is at the high end of Level 19 with no further XP gains.
Update for 6/17/11: This issue has now been resolved in Title Update 2.00. A new automatic title update for L.A. Noire is now available for download on both the Xbox 360 and PlayStation 3 platforms. You'll be prompted to download the title update as soon as you sign into the PlayStation Network or Xbox LIVE.
Please note that the fix will be applied to your save file when you play the game. After your in-game stats have reached Rank 20 and the achievement has unlocked, save the game to synch the updated stats with your Social Club account.