WD My Book 1110 Quick Test Fail

DLGDIAG reports…

Test Option: QUICK TEST
Model Number: WD My Book 1110
Unit Serial Number: WCAVYxxxxxxx
Firmware Number: 2003
Capacity: 1999.70 GB
Test Result: FAIL
Test Error Code: 06-Quick Test on drive 3 did not complete! Status code = 07 (Failed read test element), Failure Checkpoint = 97 (Unknown Test) SMART self-test did not complete on drive 3!
Test Time: 06:40:03, April 23, 2011

The drive is still accessible and functioning just slow.  The slownwss is what lead me to troubleshoot and find this error.  My OS is Windows 7/64.  Disk contains lots of data.

Hi there

Your drive may be defective, I would suggest to contact WD to verify the warranty and replace it