aptitude-dbg 0.4.11.11-1ubuntu6 (amd64 binary) in ubuntu karmic

 aptitude is a terminal-based package manager with a number of useful
 features, including: a mutt-like syntax for matching packages in a
 flexible manner, dselect-like persistence of user actions, the
 ability to retrieve and display the Debian changelog of most
 packages, and a command-line mode similar to that of apt-get.
 .
 This package contains the debugging symbols for aptitude. You only
 need these if you want to generate debugging backtraces of aptitude;
 if you do, you probably also want the debug package for the cwidget
 library.