suspect scripted worm? help!

Hi,

My problem is that somehow these processes (cscript.exe, ping.exe, find.exe) are keep appearing and disappearing almost every second.
It bugges me and I think they are slowing down the internet speed.

  1. is this can be normal?

  2. I tried every examinations by avast, do you have any idea to fix this issue?

My circumstances are:
I’m using Samsung Laptop and using university dorm network(wired/wireless x).
probably using routers.
OS: Windows XP SP3.

any two cents will be very helpful. Thank you forum users!

(attached are my script shield screenshot. cscript.exe, ping.exe, find.exe processes come and go almost every second)

follow guide and attach logs. http://forum.avast.com/index.php?topic=53253.0