My player doesn't keep very good time.. I dont use the clock in the player but I do notice the time if I scroll through the visuals. The time is seldom close to correct.

I do plug my player up to my PC about once a week.. if it synced at that time, it would be a lot more accurate. I wouldn't have to adjust the time by hand.

But again, in my case, I dont use the clock in the player, or the time display visuals.