Im wondering why some packages from debian sarge are not updating with
security updates.

I saw from the debian site that the version numbers are not updating.
But for example in webmin.... i see the last update in the changelog is from
15. April 2005

where webmin had some security updates:
http://www.webmin.com/changes.html

Also im wondering that all kernelupdates are updated.

Can someone explain me this.

Nijo Loco