Its not so uncommon for this to happen. Hell, i bought Drakan (the PC game), and when running the game it asked me to insert the CD even though it was inside. Keep in mind this was NOT a burn but the real CD. Worked fine on my friends computer though. Replaced the copy, same thing happened. Some CD drives just don't work. I remember my old 2x drive couldn't read recordables at ALL (you'd just hear strange clicking sounds comming out of the drive).
btw, the drive I use now is an Acer 32X