Hi WW
So you have mysteriously gained a new firewall
.
I'll take a wild guess and say that (maybe) your new ISP has provided you with a firewall, I know that some ISPs automatically virus check your emails for you so maybe they have graduated to providing you with a firewall as part of their installation package.
If you have got a new firewall it should show up in your system tray or, at the very least, in your Add/Remove list.
Hope this helps.
UK Bob