I haven't had GT5 lock up on me in some time (though I haven't played much since 3.56).
It does often leave me stranded in online lobbies with broken controls, though. Result is almost the same, kill the game (home button still works) and start over. 'Starting over' meaning sitting through minutes of agonizing initial load times, and wading through clumsy menus with resource-hogging backgrounds.
GT5's just a broken game from top to bottom that's clearly never seen a proper playtesting cycle. Hopefully the next patch will fix some of its problems, but since it took 5 years to get to where it is now, I have little faith in that.
Edited by Reaperman, Wed Feb 9, 2011 11:11 AM.