[SOLVED] Able to Remote Desktop, ping but not reaching share drive

Hi All,
I found interesting and annoying issue. Basically I have 3 PC:
1. problematic Windows XP Professional SP3 (ip: 192.168.0.93)
2. Windows XP Professional SP3 (ip: 192.168.0.94)
3. Ubuntu Server using Samba as file server (ip: 192.168.0.3)

Normally computer 01 able to browse computer 02 and 03; but for the past day I unable to access share folder that computer 02 and 03 created.

from computer 01, I can:
- Ping 02 and 03
- access internet

from computer 02, I can:
- Remote desktop computer 01

but from 01, I can't:
- access share folder of 02 and 03, error: "Windows cannot find "\\comp02". Check the spelling and try again, or try searching for the item by clicking the Start button and clicking Search."
- see 02 and 03 from "My network places > Entire Network > Microsoft Windows Network > Workgroup"

This is what I've checked:
- all computers under same workgroup (which is "Workgroup")
- under same subnet (which is 255.255.255.0)
- Disable all firewall from all computers
- checked that "File and Printer sharing for Microsoft Network" enabled
- even tried to 'repair' the windows XP by putting in the original CD and "reinstall" the XP

My guess:
- could this something to do with particular service that is not running? what would that be?

Please find attached netstat -a result from computer 01

Thank you so much!