Thanks for answering my question. I am downloading Avast right now. I really appreciate your recommendation.
Anyway, when I try to connect to Second Life, this is the message that comes up.
"Login failed.
Despite our best efforts, something unexpected has gone wrong.
Please check status.secondlifegrid.net to see if there is a known problem with the service.
If you continue to experience the problem, please check your network and firewall setup."