[blindlemon]

tverr or kernel.

Look out for any mention of DMA or uncorrectable errors which would indicate a bad sector (or sectors) on your drive.

 

[blindlemon]

Could have been a power glitch that knocked out the custom media switcher chip (made by NEC) which co-ordinates all the audio and video files - or maybe some minor drive corruption that resulted in garbage to the chip? Do you have your TiVo running on a UPS?

Might be worth running mfscheck (kickstart 57) if it happens again.