Broken dpkg.cfg?

[peek <peek@tiem.utk.edu>]

Hi all,

(I posted this to debian-user yesterday but got no bites.  I'm hoping to 
have more luck with the debian-devel group.)

From the Debian FAQ 8.5:

> If you'd like to log all your dpkg invokations (even those done using 
> frontends like aptitude), you could add
>
>      log /var/log/dpkg.log
>
> to your /etc/dpkg/dpkg.cfg.


But, like, this doesn't work and stuff:

> # cat /etc/dpkg/dpkg.cfg
> log /var/log/dpkg.log
> # dpkg -l
> dpkg: configuration error: unknown option log: Success


How is this really supposed to work?  (And why does it say "Success" 
when it exits with an error?  Success at generating an error?)

Btw, I'm running Sarge.

Thanks for your help,

Michael Peek