remove firstbootscript first, then do rest

default/hooks/firstboot

@@ -8,6 +8,9 @@ cat > $ROOTDIR/etc/init.d/firstboot << __END__
 # Default-Stop:
 ### END INIT INFO
 
+update-rc.d -f firstboot remove
+
+# generating ssh host key to be unique
 for f in rsa dsa ecdsa; do rm -rf /etc/ssh/ssh_host_\${f}_key; done
 echo "generating ssh rsa key..."
 ssh-keygen -q -t rsa -f /etc/ssh/ssh_host_rsa_key -C "" -N ""
@@ -15,8 +18,6 @@ echo "generating ssh dsa key..."
 ssh-keygen -q -t dsa -f /etc/ssh/ssh_host_dsa_key -C "" -N ""
 echo "generating ssh ecdsa key..."
 ssh-keygen -q -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -C "" -N ""
-
-update-rc.d -f firstboot remove
 __END__
 
 chmod +x $ROOTDIR/etc/init.d/firstboot