“You cannot make another post so soon after your last”.
I posted the last one about 7 hours ago 
(edit to add,) even though it went through
To stop bots spamming.
Some thing to do with server etc as a few forums I’m a member of are like that 
harrawaffa:
To stop bots spamming.
You mean trolls trolling 
I’ve actually edited my OP, cos I went back to where I was posting (French Speed Limits] to look at the times I had posted previously, only to find that it had actually gone through ?
blue estate:
Some thing to do with server etc as a few forums I’m a member of are like that
This ^^^
It’s built into the software.