I use the latest version of Nero 8 (220.127.116.11) and I have no problems. That doesn’t mean others might not have discovered issues. For me and my situation, that version works, it meets my needs and I love it.
If you go through Nero’s Forum, reports are that Nero 9 is terrible and is so similar to 8 that there is little reason, if any, to upgrade. With all the flaws, upgrading is foolish.
[B]Update: [/B] I read through your post again. What media are you using as a failure rate of 50% is not right? There are many factors which can lead to a failed burn but something is definitely wrong and I can’t believe that the high failure rate is attributable to 18.104.22.168