Do not refresh the page if you get the white screen, just open a new window. Even if your post isn't showing up right away be patient and know that it will show up eventually. Sometimes this can take quite a few minutes. 

If you do get a duplicate post and make a request to have it removed please have the courtesy to [b]use the permalink url for each post and use the code to make an [u]actual link[/u][/b] for the post to be hidden. This makes our lives easier. 

Also bear in mind this will mess with the post count since the post is still technically there.