Often, error windows balloon on the screen when surfing. There’s an explanation for each of these error messages. Here are some of them:
• ERROR 403 - Forbidden Pages
you are not authorized to view the content of this site.
• ERROR 503 - Service Unavailable
Normally, the page would be there, but there is a temporary problem. Try again in a minute or so later.
• File Contains No Data
This means that the page you are trying to go to actually exists, but nothing is available at that point of time. Retry after a few minutes; the site might be in the process of being updated.