This is turning out to be more of a pain in the arse than I had expected.
Now the icon in the lower-right corner is tells me I am "Connected To
Host" but when I attempt to attach the BOINC software to a project such
as SETI@home, I get yet another error screen informing me SETI@home "is
not included among the BOINC-sanctioned projects".
(30 minutes later) Now it's not connecting again. The firewall is
completely turned off.