Ashbar,
A couple of things to try:
Avoid using your browser's navigation buttons (Back, Forward) unless otherwise instructed. Use the buttons on the page to navigate the system. If you're still getting this message, try the following:
Click on Edit, Preferences. Then click on the + next to Advanced, click on Cache. Make sure that Netscape is set to always check for newer versions of web pages every time.
If you still have problems you may have to copy and paste into a word processor.
hth
John