Re: cd dvd drive burning slower that it used to..
Well, it also depends what you're doing in the background as well. You may use more programs than before and that disturbs the transfer.
Although, the main problem may be with Nero. I remember on my other PC, the memory read buffer wnt down to 0% then jumped at 100 again. Try a differet program, like Oront or Roxio. See if it still does it.