Have you notice you are having double posts?
If you have a machine that seems to now respond when you give it commands, you might want to reboot.
I have double post problems when having java script attacks.
I use Zero Script plugin with Firefox. It helps. Takes a bit of getting used to but helps.
Zero script. I’ll try it. Sometimes it doesn’t seem to post so I wait a few seconds and hit it again and get two posts. Sometimes I hit it once and it posts twice.