Having a harddrive die isnt that odd of a thing, but 3 in such a short while...
Hm
Are you 100% sure that your computer case is on a secure position? No close by doorway that shakes your desk, kids running around, recent moving of the computer, subway trains..
Its just very odd that 3 drives would fail like that.
Also if any of them are in a RAID setup, your motherboards controller MAY possibly be messed up. I've seen that happen before where it just seems to forget what it was doing and think you have 2 new drives..
