yeah, help! i just got an inspiron 6000 with this model dvdr and am having a similiar problem. all dvds i make play fine on the notebook but about 50% of them don't play right on a stand alone player. the funny thing is some do actually work properly, which makes it harder to troubleshoot. most of the ones that don't work will read but the last few chapters go to 'unable to read disc'.
i am going to try a newer version of Nero today (22.214.171.124, i was using 126.96.36.199) and have tried all kinds of various media +-r, but it doesn't seem to make a difference. sometimes just burning it again produces a fully working copy but i hate wasting all these dvdrs.
i have been unable to find any drivers or firmware upgrades for this thing. anyone know where to go?