How to deal with consistent "404 Not Found" errors

If you are consistently getting "404 Not Found" errors when you try to
access web pages, there are a few reasons this might be happening.
The most obvious is that the page you're trying to get to really doesn't
exist.  Double-check the URL you're using to get to it.
This might also be caused by having Netscape Navigator's buffer size set
too low.  Go into the Netscape Preferences (under the Options menu), go
down to the "Cache and Network" section, then raise your "Buffer Size"
to 4 or 5 kilobytes.  Restart Netscape Navigator, then try to access the
web pages again.