I get this message from Norman "Location: c:\windows\system32\drivers\tcpip.sys
Trojan: W32/Hupigon.AIVC"

It is the same trojan every time and then windows asks to repair windows
again by installing it.

Just before I installed all the updates I did a spyware scan and removed all
bugs. Then I installed all the updates and reboot my pc. And then the trojan
attacks.