Greetings!

If I remember correctly, this sounds very similar to a memory error that was posted on the board a while ago. Especially if you see it on a random track (not the same track or the same time in the track) and if the player has been running for a while (heat). You may want to do a search on the board for memory problems, and also run a self test on the player (hold control-T when applying power to the player), both when it first starts (cold) and after it has been running for a while.

Paul G.
SN# 090000587 (40GB Clear)