Hi Thor,
Teredo is definitely not part of SecureLine. This is a tunneling technology for IPv4 to IPv6 transition.
It may be the cause of your issue so you can try to disable Teredo to see if that helps. Here is some info on how to do that:
1) go to Start, then control panel
2) go to system and maintenance link
3) click "view" and select "show hidden devices"
4) expand the network adapters section
5) right click on "teredo tunneling" and then "disable"
6) right click on "6to4" adapter and then "disable"
7) right click on the network card you are on and then click "disable" and then "enable" to refresh
Please post back if this resolves your issue.
Best regards,
Davidek