I also had a bad experience with Express Burn. I tried it on my XP laptop because the original burner that came with the computer was difficult to use and finally stopped working completely. Express Burn worked for a while and then did the same thing this other user just described. Almost every CD or DVD I burned had errors and ruined most of the blank media I used.
I would suggest those who want a good burner download Image Burn. It not only makes good transfers of files or folders or a mix of both, or an image of an existing disk. It's also Freeware. But it works so well that I feel obligated to contribute a reasonable amount of money every year.