http://www.findarticles.com/p/articles/mi_m0OUK/is_4_10/ai_115076404
Whenever you are testing or making a critical CD-R (especially one for archival storage or for replication), burn the discs in disc-at-once mode instead of track-at-once mode method, which is available in many audio and duplication applications. Disc-at-once mode will burn the disc in its entirety without switching the writing laser off. Track-at-once will burn each track separately; switching the write laser on and off. Track-at-once produces errors on the disc, often rectified on playback via error correction. In addition, track-at-once discs do not conform to the Red Book specifications (the standard for audio CDs), thus making them incompatible with various players and not excepted by various duplication facilities.