I have recently installed the new 10.5.2 version of iTunes and problem is that whenever I launch the iTunes then this locks up immediately. I waited for it for ours but there was no progress. Finally I have to end this from the task manager. This happens all the times whenever I try to start this. I have tried with almost all the things that I know about this but none of them were helpful to me. If you are having any helpful information about this then please let me know that.