apt-get and distro aliases

["John Fleming" <john@wa9als.com>]

Reading recent threads, I plan to install Sarge and change apt sources to
name-based, i.e. to "Sarge" rather than "testing".  My understanding is that
when Sarge becomes "stable", I will stay with Sarge and be able to get
security updates.

I am now running unstable.  I just tried an update using "unstable" and
there was nothing new available.  Then I changed sources.list to "sid" and
it retrieved 3217 kB.  However, when I ran upgrade, nothing was upgraded.
Can anyone explain this behavior?  Thanks - John