Many thanks to Bob Elliot for finding this.
One solution would be to downgrade.
I read that it happens only with certain type forums.
V type something or other.
Sorry I am not geek enough to recall the rest.
Other wise you need to copy what you just typed and re paste,followed by a resubmit.
Looks like Chrome is getting an assist from Fire Fox.
Chrome…is the answer… http://www.google.com/chrome
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I get the same thing when trying to read particular posts, says I need to wait 5 seconds, but that does not work. So I open Google chrome browser to read them, my remedy to the problem. This does work.