That little menu has always been set to forever.
I will try something other than forever when I end this post.
Otherwise, all that I can tell you is that I have a MacBook and am using OSX or whatever they call it. Then Safari on that.
This has been happening for about a month, which is why I have stopped coming around-because I thought it would fix itself.
But it hasnt so I decided to bring this to your attention.
The only other thing that I can think of doing is maybe give my password to a moderator to they can log in as me and try to post something and see if it happens for them.
Just happened to me while trying to post this message. I have to click Preview, and then post as quick as I can to post something.
Heres what it said:
The following error or errors occurred while posting this message:
Your session timed out while posting. Please try to re-submit your message.