[eluser]Aethedor[/eluser]
I don't know why it sometimes fails, it seems random. But for every succesfull submit I did in the last few minutes, I had about the same amount of failures.
Edit:
let's see if edit also fails sometimes.
Edit:
seems also buggy. I added a line (entered 'seems oke'), but after I pressed Update Post, I saw the textarea+message again but without the change.
To answer your previous question: not long. About 10 - 20 seconds?
Edit:
Going home now. I'll read your reply later (perhaps tonight).
P.S.
I wouldn't be surprised if the post-failures-without-any-warning have something to do with incorrect return-value-checking....