ST3500320AS 7200.11 got bads, replaced one got bads again

[Wayfarer]

Hello,
Here's the story.
I was in need of another HDD and I decided to buy ST3500320AS 7200.11. After I got it, i tried to install windows sp3. I kind of failed: the PC stopped responding after each booting. I tried reinstalling different versions of Windows, but that did not help. Frustrated I checked the new HDD. And yup- it had 36 bad sectors. Next thing happened was that windows could not see it. Got the data back, but the drive died. It was replaced and my story would have ended here. But: after ~24hrs of use HDD sentinel showed that the new drive got one bad sector. The drive got 20+ bads a few hours later and quickly died again. I am again waiting for the drive to be replaced, but I have a question whether this is my pc's fault or I just got bad luck. The voltages supplied by the PSU were normal or at least they were showed as such in Everest. No abnormal restarts, the previous 200 GB Seagate worked and is working like a charm, etc. So could someone help me to determine the cause of all this?

My specs:
AMD Athlon Dual Core x2 3800+ (am2)
Mobo Asus M2N-MX SE
Ram 1gb ddr2 667
Sapphire Radeon HD 2600xt 256 mb
PSU ColorIt 350W
PC is connected to an 800VA UPS.

[HDD Spaz]

Possibly a faulty batch of disks. Get a Samsung. Good news for us Guru's.

[thatdellguy]

The 7200.11 line of hard drives should be avoided unless you want an expensive recovery bill. Consider yourself lucky you got any data back. Invest in a raid mirror setup.