Magician does have a pretty good track record, and it's usually not an issue... but Samsung has also been known to release buggy firmware updates from time to time. IMHO it's always best to give it at least a few days while you check around for complaints/howls of pain from the impatient folk (more so if your drive appears to be working fine). There have been times when I've ignored firmware updates for months simply because nothing seemed to be broken.