Just catching up on emails. I had a bit of a backlog that I needed to clear…180,000 spam messages deleted and about 10,000 of my own messages to download into my own mail client.
I think this error might be a caching /PHP session ssue. Bad Behaviour looks for events happening that shouldn’t normally happen. It seems to be finding the PM HTTP POST message coming more than two days after the HTTP GET command that initiated the PM. If a GET message has been cached from a previous PM a week ago and then you send a new PM using that page, it looks like you’re trying to send PM today that you initiated a week ago.
That could be down to caching or possibly different session IDs if you log in on multiple devices.
As a trial, is anyone able to turn off client side caching to see if they still get the problem. Alternatively, does anyone who only ever uses the forum on a single device see the error?