Is this something to be worried about?
The burn process took 8 minutes 17 seconds on a Memorex F16 (16x DVD+-DL) with Memorex Ritek 8x DVD+R; Full disk was burned.
How does Nero figure it burned at -2,147,472,773 KB/s? Note the negative value!
It's done this before, I haven't noticed if it says this every time. Negative 2.1 Terabytes each second?