Smart fail

Hi guys,

For two months i notice that my computer was running low sometimes. Extract files on winrar was getting a little more time, warcraft 3 frozes for 2 or 3 seconds while playing, watching stream videos stopping the video but not the audio etc. So i formated my computer, installed amd raid expert, ran some memory, gpu and hd tests. Every test shows no problem including the hd read and write tests had good scores, but amd raid expert starts to show me an Smart error. At the amd raid expert software it shows me 1 healthy hd, and 1 with this Smart error. Than i came to WD website for some suport, downloaded the DLG software and got the result bellow on the extend test:

Test Option: EXTENDED TEST
Model Number: AMD 2+0 Stripe/RAID0
Unit Serial Number: 1308649f04000000000001.10
Firmware Number: 1.10
Capacity: 1500.00 GB
SMART Status: FAIL
Test Result: PASS
Test Time: 19:00:38, June 04, 2012

Test result pass, but SMART Status fail. How can i get more information about this fail? it can be repaired?

Thanks for attention, but sorry about the bad english!

Try a comprehensive SMART diagnostic. Look for reallocated, pending, or uncorrectable sectors.

HD Sentinel (DOS / Windows / Linux):
http://www.hdsentinel.com/

HDDScan for Windows:
http://hddscan.com/

See this article for SMART info:
http://en.wikipedia.org/wiki/S.M.A.R.T.