My computer is getting slower and slower. Running torrents while playing Street Fighter IV (offline) will make my computer EXTREMELY SLOW and when I played mp3 while downloading using torrent (utorrent), the music will sound like a broken machine ("bezzzst" kind of sound, once a while).

Sometimes my computer will be extremely slow while booting.

Another symptom is this: my mouse sometimes "sticking" or getting "sticky" (I'm at lose of words to describe this). While I move my mouse, the cursor getting slower, and sticky to move..)

Hard disk concerned: Seagate 160GB ST3160815AS (2 partitions, using quick format)

I've ran:

chkdsk g: /f /r

Completed, got no error whatsoever (no bad sector too)

But on the second partition (D:), there is 12KB of bad sector.

Ran the same command, chkdsk d: /f /r and the problem is still there.

I've ran SeaTools for Windows and this is the log:

--------------- SeaTools for Windows v1.2.0.1 ---------------
1/27/2010 10:18:58 AM
Model: ST3160815AS
Serial Number: 6RAETBQ0
Firmware Revision: 4.AAB
SMART - Pass 1/27/2010 10:18:58 AM
Short DST - Started 1/27/2010 10:19:10 AM
Short DST - FAIL 1/27/2010 10:19:25 AM
SeaTools Test Code: 66E3C3E8
Long DST - Started 1/27/2010 10:22:59 AM
Long DST - FAIL 1/27/2010 10:24:23 AM
SeaTools Test Code: 66E3C3F8
Short Generic - Started 1/27/2010 2:16:04 PM
Short Generic - Pass 1/27/2010 2:21:36 PM
Long Generic - Started 1/27/2010 2:22:56 PM
Long Generic - FAIL 1/27/2010 2:36:12 PM
SeaTools Test Code: 66E3C3D8

I also used Auslogic Disk Defrag and use the option "Defrag & Optimize" on both partition and yes, the problem is still there.

If I unplug the drive, my computer is running smoothly. (My primary hard drive is Hitachi 80GB (HDS721680PLAT80)

Got any clue as to why this is happening?

MORE: I also used HD Tune and quick scan revealed no error occurred while it ran. However, on Health tab, it reveals this: