Hi,
   I what way can I improve my use of the tools? I don't remember
seeing a case before where revdep-rebuild -ip was clean but emerge
--depclean didn't want to remove files. I.e. - the
sys-libs/db-4.5.20_p2-r1 message.

Thanks,
Mark

lightning ~ # revdep-rebuild -ip
 * Configuring search environment for revdep-rebuild

 * Checking reverse dependencies
 * Packages containing binaries and libraries broken by a package update
 * will be emerged.

 * Collecting system binaries and libraries
 * Generated new 1_files.rr
 * Collecting complete LD_LIBRARY_PATH
 * Generated new 2_ldpath.rr
 * Checking dynamic linking consistency
[ 100% ]

 * Dynamic linking on your system is consistent... All done.
lightning ~ # emerge -p --depclean

 * Always study the list of packages to be cleaned for any obvious
 * mistakes. Packages that are part of the world set will always
 * be kept.  They can be manually added to this set with
 * `emerge --noreplace <atom>`.  Packages that are listed in
 * package.provided (see portage(5)) will be removed by
 * depclean, even if they are part of the world set.
 *
 * As a safety measure, depclean will not remove any packages
 * unless *all* required dependencies have been resolved.  As a
 * consequence, it is often necessary to run `emerge --update
 * --newuse --deep @system @world` prior to depclean.

Calculating dependencies... done!
>>> Checking for lib consumers...
>>> Assigning files to packages...
 * In order to avoid breakage of link level dependencies, one or more
 * packages will not be removed. This can be solved by rebuilding the
 * packages that pulled them in.
 *
 *   sys-libs/db-4.5.20_p2-r1 pulled in by:
 *     dev-lang/perl-5.8.8-r5
 *     perl-core/DB_File-1.815
 *
>>> Adding lib providers to graph...
 \
Calculating dependencies... done!
>>> No packages selected for removal by depclean
>>> To see reverse dependencies, use --verbose
Packages installed:   801
Packages in world:    95
Packages in system:   51
Required packages:    801
Number to remove:     0
lightning ~ # emerge -pvDuN @world

These are the packages that would be merged, in order:

Calculating dependencies... done!

Total: 0 packages, Size of downloads: 0 kB
lightning ~ #