I seem to have fixed it. (Script running away, but it will come back)
This is a very old server that I haven't migrated from because:
TalkAwhile uses ancient forum software that I heavily patched so can't be ported.
There is an old PERL script that handles some CCTV and I've forgotten how it works.
There are a couple of email addresses that do need to be ported.
So this server limps on. Much like I do.

