oh....

sometimes whenever i try to make a new thread or reply to a thread, it says, ''page cannot be displayed.'' and i refresh and it doesen't record my post or my thread. do you know why it does this?

It's due to the errors PC is getting (you can read up on it in the other threads in Q&F).
But next time this happens try clicking the "Back" button, that might save the post so you can post it again.