Persistent Error Message

[Mr Mxyzptlk]

I've been getting this pretty often when I make a post over the last couple of days.

Your submission could not be processed because a security token was missing.

If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error.

Pretty annoying. What's up with that?
Apologies if this has been addressed elsewhere. Haven't done a thorough search for a thread about it.

 

[James]

Very strange, never heard that one before.

Anyone else having this problem?

 

[sledger]

Came up a couple of times when I was trying to sign into Phoenixfire's account last night.

 

[Mr Mxyzptlk]

Happens probably 1/3 of the time I make a post. It's not a big problem, actually, because I can just go back and try again, as Firefox remembers the content of my post. Still odd.