All HDD manufacturers have had product issues at some point in the last few years.
Look how many have lowered their warranty lengths.
Seagate seem to have inherited Maxtor's quality/reliability problems, which have been patchy.
I haven't bought a Seagate drive for years, as they always seemed to run hotter & noisier then others. Been sticking with Hitachi & WD. WD might not have a reputation for fast, but I've found them reliable.