thanks for the replys gang,
the thing is I was just looking for some rational reason why
the NEC burns these disc at 12x Great but looking at it's actual burn in cdspeed was a shock.
I don't think multi-tasking was the reason for the spikes in the 12x portion of the burn,
buffer underrun is more likely.
As for overspeeding this media, i don't really see it, the kprobe scan is very good
pi max - 29
pif max - 3
Cheap media: yes it is, but i have Ritec and TY02's that are doing worse at these speeds.
cnlson i gave up burning those prodisk R02 at 8x i had about 200 of those and found they really only burn at 4x - 6x max
making the disk image was an extra step and just done as a test..
Thanks again for the replys