I swear by their RAM and PSUs, so it's not a case of just because it's Corsair it's bad.
I'd say a lot of peripherals these days are poor quality, plasticky, designed to fail.
Anything from keyboards and mice, to headsets, and monitors.
I don't really think there's anything that makes Corsair particularly worse than anyone else.
If anyone's looking for a keyboard and mouse, the pair I'm using at the moment seem pretty bulletproof.
KB: Qpad MK-50
M: Logitech G302
From what I've read across so many boards most seem to have a real hate for Razer yet I do not understand why. They even slate their customer support something rotten, yet I had used them sending emails back and forth with logs and whatnot for a few weeks, they tracked the bugs down that got sorted with new revisions. Problems solved.