This is pretty evil behaviour.

[Bob Beck]

pkg_add -ui
....
You should also check /etc/cvsyncd.conf (which was modified)

# more /etc/cvsync.conf                                                         
                     
# $OpenBSD: cvsync.conf,v 1.1 2013/08/29 14:28:13 naddy Exp $
#
# Fetch the OpenBSD CVS repository.
#
config {
        # for a list of available servers, see
        # http://www.openbsd.org/cvsync.html#CVSROOT
        hostname cvsync.example.org
        base-prefix /cvs
        compress

        # the whole repository
        collection {
                name openbsd release rcs
                scanfile /var/cache/cvsync/openbsd
        }

#       # alternatively, fetch only selected parts
#       collection {
#               name openbsd-cvsroot release rcs
#       }
#       collection {
#               name openbsd-ports release rcs
#       }
#       collection {
#               name openbsd-src release rcs
#       }
#       collection {
#               name openbsd-www release rcs
#       }
#       collection {
#               name openbsd-xenocara release rcs
#       }
#
#       # the X11 and XF4 trees are of historical interest only
#       collection {
#               name openbsd-x11 release rcs
#       }
#       collection {
#               name openbsd-xf4 release rcs
#       }
}


I contend modifying something to turn it into an idiot example
is wrong behaviour