Pse explain apt-get & security

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

Sources are sarge - ran apt-get update and got something related to 
security.  Ran upgrade and nothing appears to happen.  Please explain to 
this newbie what's happening here and what to expect.  I'm familiar with the 
normal routine of package upgrading, but this caught me offguard when 
nothing appeared to happen after the update was downloaded.  Tnx

apt-get update
Hit http://ftp.us.debian.org sarge/main Packages
Hit http://ftp.us.debian.org sarge/main Release
Hit http://security.debian.org sarge/updates/main Packages
Get:1 http://security.debian.org sarge/updates/main Release [111B]
Fetched 111B in 0s (211B/s)
Reading Package Lists... Done
# apt-get upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
# 



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