Need for speed most wanted ps3 crashes after playing speedlist online

Hi since a view days i am experiencing problems with nfs most wanted. Every time i play online my ps3 crashes after i finished playing a speedlist then i have to hard reset the ps3 and startup all over. And since it takes ages before you loadup it aint that funny to play any more. I am lvl 71 and started concourse. Lvl 20 on concourse. I know more people are having this problem anyone knows what to do ore is this a error in game. Thing i have done so far. Rebuild database ps3 Rebuild harddrive ps3 Ps. Would be nice if the game remembers the last played language. So you wont have to choose that any more. Saves alot of loading time. Online id ps3 : kid750