ok, 3 or 4 times now htis has happened, the next time it does i'll get a screen shot of both pages but you basicly:

reply to a post and the screen goes blank
the little thing in the corner says "done"
but nothign on the scren at all
press f5
the message "you need to resend the info" or words to that effect appear
so i press yes
then it says "you've already sent the same message in the last 5 minutes"and then the forum goes back to normal again

anyone else?