hi all there i'm new here. Here is my experience with my new nec nd-2500a. I tryed buring some dvd-r (tx) 4x, and all is ok. Ok too with dvd+r (verbatim) 4x. Then i have a couple of tdk. One is a tdk dvd-rw 2x and is not working, i ever used it with my old pioneer and it wrote and deleted, but my nec is not capable of deleting this on. Nero says it has a problem with power or something like that and after a few second will stop not erasing the disk. More over i have another disk a tdk dvd+rw 4x and i wrote with this nec 4.3gb of data over it, now the same nec won't read this disk HE wrote. Instead the lg dvd-reader read it just fine. Any advice? common trouble? have to wait for new fix?