Train, thanks. I did find that file but I just wonder why the Windows' search did not stop by itself after it searched the whole hard drive. It continued and then give me more entries on same file in the same folder. i.e. I saw n entries of the log-date.txt in the same folder if I let it keep running.

The following is the log after the full scan by MWB. Thanks.

Malwarebytes' Anti-Malware 1.44
Database version: 3895
Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

21/03/2010 6:17:50 PM
mbam-log-2010-03-21 (18-17-50).txt

Scan type: Full Scan (C:\|)
Objects scanned: 269441
Time elapsed: 1 hour(s), 36 minute(s), 13 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)