installdate of a port/package?

[Ronald Klop]

Hello,

I just upgraded a machine from FreeBSD 6 to 7. Very nice.
But my portupgrade -fa failed after a while.
How can I know which ports/packages are still from FreeBSD 6? Is there a  
datee recorded somewhere or the FreeBSD-version of the port/package?
The date of the files in /var/db/pkg/* is unreliable, because installing a  
package gives these files the date of the files in the package.

How do I know which ports I still need to update?

Ronald.