Can MacOSX damage repeatedly an usb hdd?

Hi all! I'm experiencing a very bad situation so i pasted below what i wrote to Samsung/Seagate:
The hdd in question is a Samsung G3 Station USB 2TB (less then 1-year of life).
I use the usb disk on a Mac system with 2 partition in HFS+ formatted file system. One dedicated for hourly backup with TimeMachine, the other used as DATA storage.
The problem is that every 2-3 months the operating system tell me that the entire disk is unreadable and needs to be formatted; i lost every files and i experienced this more and more than once and its so unpleasant....
No external events seems to be correlated with the disk damage: no loss or unstable power, no particular operation like heavy, continuous or extreme demanding file transfer.
The issue occurs both SnowLeopard 10.6.7 and Lion 10.7 with last updates.
The shop where i bought it from told me that it passes all utility tests provided by samsung/seagate so warranty cannot even accept it because no issue is detected. They told me that it could be the Mac operating System that damage the file system but its impossible. I expect that YOU could find a solution for this very bad situation.
I use an iMac 27" i5 quad 2010, Mac OS X (10.6.7), 4gb ram, 1Tb hdd now with Lion 10.7 with all updates but problem is still here.
Any suggestion please?
Thanks
Enrico

Weigh prices...
Restore from a backup.  Free plus time...  Hopefully you have a backup. ...and a new drive...
You could spend hours reading these forums and trying to figure out what the problem is.  Very cheap...   Depending on what your time is worth.
You could take your computer and hard drive to a service Dept.  Probably cost you 75 - 100 bucks to get them to tell you what the problem is.
Buy disk warrior.  You use it once - it fixes your problem.  Costs the same as what the service dept. charged you, but you get to keep the software that they probably are going to try.
Linc is correct in saying that if your drive has failed, then your drive has failed.  Disk warrior will not fix a hardware problem.  It will however do a really good job at finding problems with the data on your drive and fixing it.

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