Expired token error message

[adjacent]

I got this message

Your submission could not be processed because the token has expired.

Please push the back button and reload the previous window.

What is the problem here?

 

[Borek]

In most cases it means you opened the thread in a separate window/tab, left it for several hours, and then tried to answer. Just refresh the page before answering.

 

[adjacent]

Oh,I just found that my system date was set to 2013 .

 

[Greg Bernhardt]

Good to know this was the problem for future support issues :)