No TBC yet, gotta save for it. Though from what i read on here and videohelp, for LDs it most likely wouldnt be needed. Guess it is.
It seems to be around the 22 to 30 minute mark where it happens, regardless of disc played. I was transfering 8 inch music disc before and came across zero problems.
I read somewhere the 600 has issues with the Intel USB 3.0 chipset. Maybe this is causing this?