My friend Tod has the same problem. It was more frequent when he used 2.0 beta 7, but it continues to happen to him with even 1.03.

Here is the thread I created to discuss the problem. No one else responded to it.

On my player, I never got these lockups in 1.03, and lockups were rare for me in 2.0 beta7. I haven't had any lockups in Betas 9, 10, or 11.

So I am suspicious it might be the hard disk cable problem. Tonight, if he lets me, I will swap his drive to the secondary spot and hook it up to the other connector. Will let everyone know how it goes.