This is because you're putting information onto your server without
AppleShare being "aware" that you've done this. When you put information
on the hard drive of the server with AppleShare off, the AppleShare PDS
file doesn't update correctly.
You need to run the AppleShare Admin program and verify the volume to
update the PDS file. A way to prevent this is to copy files to your server
over the network. This updates the PDS file as your files are copied.