A question about winsock and BC

BC detected a trojan, thanks a lot BC.
BC erased this trojan and deleted the file but i lost internet connectivity.
After 5 minutes i opned properties of my connection and DNS dissapeared. I rewrote DNS and i am here :D:D

Is this normal?
I think it will be because i have checked “Automatic cleanup of winsock connectivity”
Thanks a lot BC
But BC must advise of this problem.
I have had 5 minutes and i’ve got my DNS near, but another peerson witout experience can stay without connexion hours.

PS
Sorry my english