127.0.0.1 is your local machine.
Sounds like something to do with your McAffee setup to me (or maybe a virus, but I wouldn't have thought so).
No experience with McAfee products I'm afraid, so I'll just say
and that I'm sure someone will be along soon who can help
Oh, and you
might find that your question gets moved to another part of the Forum, don't worry about that though