Quote - I've had one or two faulty burns using Nero, and finally worked out why. I am normally doing several thing at the same time for example listening to music,redubbing a video,browsing web sites,while burning a DVD. 
That is when I get failures. The compuyer is reading and writing to the hard disks for several programs at the same time and some data corruption occurs.
When I burn with only Nero running there is no problem.

I have been doing other stuff while the disk was burning.  I don't have quite enough coasters yet, so I'll give it a try and see if that makes a difference.

I'll also try reducing the speed to less than 18X to see if that works.I think I can pick 12X as the next lowest speed.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi