No, I didn't see your post before I posted.

Hmmm...it seems like you are having several problems. I'm not sure if they are related or not. I'm stumped! I've never encountered this problem, so I'm not sure how to handle it.

Have you tried defragmenting your hard drive?
Have you ran an antivirus scan?
After you burn the disc, can you verify whether there is anything on it (my computer...click on your CD drive with the disc inserted)?
Have you tried to play these discs on several different players?