why would the same malicious entry be found again and again?

[bsmile]

I have upgraded spy-bot to the most recent version. I use spy-bot to scan and cleaned my computer, especially, it found and cleaned "Right Media" tracking cookie. After I surfed on the web for some time, the same entry is found again. I don't know what harm it could leave on my computer, and I am wondering why it still stays on my computer even if I use spy-bot to have cleaned it before. Thanks,

[Zenobia]

Not Right Media specifically,but this has some info about tracking cookies in general:
http://en.wikipedia.org/wiki/HTTP_cookie#Tracking

Spybot 2.0 offers to help you disable third-party cookies,which should help to prevent most tracking cookies.Did you go with that option? :)