I wondered about these warnings and I assume that letting Spybot solve these "problems" would cause conflicts with Norton Security 2007, either it would disable Norton firewall/antivirus or two security packages would work same time and slow down performance.
So I did not fix the problems and searched for a Spybot "bug" solution and
only found the news article where Spybot can't imagine to be a security problem when Norton is running.
These warnings did not occur with Norton 2005 version used till some weeks ago, so it is probably a Spybot bug which is not caring about Norton 2007 existence.
If no known security program is caring about above issues then the messages
and fixes are good, but when other security software is running then it should not complain about not using Microsoft own ones.
The correct way should be to check if one of some trusted security software packages are installed and running correctly, same way as Spybot did for Microsoft Security Center above.
Spybot and Norton2007 are now also caring about similiar security problems (trojan, phishing ...) so I understand that Norton does not want any cooperation for coexistence.