Not sure I get you right, maybe post the output of the commands (whoneeds only if it is not endless).
Welcome to the forum, duncant. The package is just not journald ready. However, since you have syslog-ng installed it should still be working I would reckon (just not with journalctl). Have a look here for info and alternative (last post): https://bbs.archlinux.org/viewtopic.php?id=151562
Welcome to the forums. If a kernel update was involved, you may just have to reboot. If that does not help. post the output of iwconfig
ip aafter trying to connect, plus any errors you get from above commands.