Check this post with similar problem.
The solution as i mentioned is to get a new drive. The problem may vanish for some months.
Oh and i wanted to know if you able to burn a DVD dual layer disc. If i got by nero info tool it indicates i can burn DVD single layer but can read a DVD dual layer and not write it.
My current drive is Optiarc, earlier it was the same mentioned in ur post. So i want to know if the TSST support burning dual layer drives.