Also, do you have any third party software on it? I know you reloaded the kernels, but do you have anything that would be using up memory? Perhaps you are either running out of memory or hitting a hard memory failure... I agree with Tony - see if you can run the player while connected to hyperterm and try to capture any console errors.
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Paul Grzelak
200GB with 48MB RAM, Illuminated Buttons and Digital Outputs