Upgrades to packages

[Neil Winchurst]

I have been using Linux for over six years, and Kubuntu (currently 
Gutsy) for about two. I especially like the way that I am told when any 
upgrades are available via the red triangle.

However I have realised that only some of the installed packages are 
included in this system. There are some packages, which were installed 
via adept, that never appear. Can anyone explain why please? If I 
realise that there are more recent version of a package available what 
is the best way to go about upgrading it?

Thanks for any help

Neil Winchurst