We are sorry to hear the game is freezing! We have received a few tickets about some isolated crashes / freezes and we are investigating them individually to find out the causes and the resolution.
Here is what to do if you are crashing or freezing in L.A. Noire:
1. Delete your L.A. Noire Game Data (not save data) from the PS3 Game Data Utility. If on 360, clear the 360 cache.
2. Create a new temporary PS3 user to ensure that new save files are created. If on 360, create an offline Silver Gamertag.
3. Launch the game and try again. If you are on PS3, try playing while signed out of PSN.
4. Check your disc for scratches, dust, dirt, or other damage. Clean if necessary.
5. Check other game discs in your PS3/360 to see if issues are occurring in other games, suggesting a potential console problem.
6. Try your L.A. Noire disc in a different console or try a different L.A. Noire disc in your console to determine with certainty whether the issue could be with the disc or console, rather than the software.