Hi yadreamin
After you post, are you then clickin on 'New Posts' or on 'Today's Posts'?
If on New Posts, well, the post you just posted has been read by you and therefore isn't 'New'
Try clicking on 'Today's Posts' and you will see your contribution
Also....
Sometimes, we log in without ticking the 'Remember Me' box
And then we post some massive, wonderful post
And click Submit
And come up with a 'you are not logged in' window
So just go ahead and log in immediately, and you will find that your post has been submitted
Before I learned this little trick, I would get frustrated and click all sorts of links and lose my sumitted post. Now, I just log in and voila! there it is .... in Today's Posts!
Hope this helps
Kristine