The send-event.pl utility recently changed as follows:
-chomp (my $hostname = `hostname`);
+chomp (my $hostname = `hostname -f`);
The hostname(1) utility on Solaris does not take any switches; it assumes that anything in its argv must be a new hostname, so if you run the above on a Solaris system, the hostname gets changed to "-f".
This is bad and should be changed back or, at least, avoided if we detect that we're on a SunOS-flavor system.