auto description with cck

This is not a bug report, it is a support request.

From the README.txt:

Auto-generated meta DESCRIPTION for CCK content types
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The nodewords module uses the teaser of a node as the auto-generated
DESCRIPTION for nodes if instructed to do so on the meta tags settings
page (Administer >> Content management >> Meta tags). Unfortunately, for
CCK (Content Construction Kit) content types, this teaser is not really
useful for use as meta DESCRIPTION.

It is recommended to use the contemplate (Content Template) module to
create a nicer looking node teaser that can also be used as auto-generated
DESCRIPTION.

Note that nodewords module does not use the node.tpl.php file (or any
node-*.tpl.php file) from your theme as teaser because in general this
includes the "Submitted by ..." text which should not be included in
the meta tag.

Does that answer your question? If not, please give some more information.