I've already posted a reply in
your other thread. Please don't post two threads on the same topic in different parts of the forum - it is against the rules and can lead to useful information being split between the threads.
I mused in my other reply as to whether you had a hardware problem - now I'm not so sure, but the information is a little vague, particularly as you don't seem to have a third drive to discriminate (if it's a hardware problem, either the CD-RW or the CD-ROM could have failed).
A log of a burn from
Nero (with the name and serial number removed from the top) would be interesting to see - it reveals a lot about your configuration.
David