I have recently purchase a Philips DVDR1640 and 4x Memorex Dvd-R media to accompany it. The problem is that I cannot seem to write DVDs. On my first try, the writer ejected the media at %15 with Burn Failure error, and on the second one, Nero crashed completely. Another interesting problem is that, shouldn't I be able to select the writing speed? The speed available for selection on Nero is only 4x. There is something interesting going on here. Any ideas?