+1 with Patio - return it for replacement.Lacie has an excellent return policy, used it myself a few times over the years with a couple of their extreme USB sticks and one of their rugged external drive units.
the physical drive inside will either be a Toshiba, Hitachi, Seagate or Western Digital so judging by the name on the external badge is misleading, in this sort of case where one company uses other companies parts, it's the reputation of the visible brand name that gets hurt so they need, and have, a very good return process.
for the times I've used them, I bypassed the retailer where I got them from (although you could certainly go to them as you are entitled to do) and liaised directly with Lacie.