My post does not show up.
If you use the browser's back button several times after posting a message, you are looking at the page as it was before you posted the message. Clicking links from the Navigation Bar avoids this problem.

If you still have a problem, then your browser is pulling the document out of its cache instead of reloading the document, and it keeps displaying the old version of the document. To avoid this, set your browser to verify documents every time upon loading as follows:

Internet Explorer: Click on Tools, then on Internet Options.... Under "Temporary Internet files" click the "Settings..." button. Under "Check for newer versions of stored pages," select "Every visit to the page." Then click on OK to exit the settings dialog box, and finally on OK to exit the options dialog box.

Netscape Communicator: Click on Edit, then on Preferences..., and then on the + icon next to "Advanced." Then click on Cache from the expanded tree. Under "Document in cache is compared to document on network," select "Every Time." Then click on OK to exit the screen.