When I start the burning, the speed is set to 12X. This is also shown in the status box that pops up during the burning process.
But in the "estimated write speed" at the bottom of this box, K3b is showing much more than 12X.
I just tried writing a RW disc and when I set it to 4X writing speed (which is what the disc was certified for), the estimated speed was 5.68X.
For writing Data to the same 4X RW disc, the estimation shows 4.12X
/Kenneth