While upgrading my husband's box to Jaunty, we ran into a slew of package conflicts, most of which could be traced back to a single XPM image supplied by both the KDE3 and KDE4 versions of kmix:


 /var/cache/apt/archives/desktop-effects-kde-kde3_0.4-5_all.deb                 
 /var/cache/apt/archives/kaffeine-kde3_0.8.6-0ubuntu5_i386.deb                  
 /var/cache/apt/archives/kfind-kde3_4%3a3.5.10-0ubuntu4~intrepid14_i386.deb     
 /var/cache/apt/archives/kmag-kde3_4%3a3.5.10-0ubuntu1~intrepid4_i386.deb       
 /var/cache/apt/archives/kmix-kde3_4%3a3.5.10-0ubuntu1~intrepid6_i386.deb       
 /var/cache/apt/archives/kmousetool-kde3_4%3a3.5.10-0ubuntu1~intrepid4_i386.deb 
 /var/cache/apt/archives/kopete-kde3_4%3a3.5.10-0ubuntu1~intrepid6_i386.deb     
 /var/cache/apt/archives/kppp-kde3_4%3a3.5.10-0ubuntu1~intrepid6_i386.deb       
 /var/cache/apt/archives/network-manager-kde-kde3_1%3a0.7svn864988-0ubuntu5_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)                         
abe@swan:~$ sudo apt-get install kubuntu-desktop-kde3                           
[sudo] password for abe:                                                        
Reading package lists... Done                                                   
Building dependency tree                                                        
Reading state information... Done                                               
kubuntu-desktop-kde3 is already the newest version.                             
You might want to run `apt-get -f install' to correct these:                    
The following packages have unmet dependencies:                                 
  kdebase-kde3: Depends: kfind-kde3 (>= 4:3.5.10-0ubuntu4~intrepid14) but it is not going to be installed                                                       
  konqueror-kde3: Depends: kfind-kde3 (= 4:3.5.10-0ubuntu4~intrepid14) but it is not going to be installed                                                      
  kubuntu-desktop-kde3: Depends: kmix-kde3 but it is not going to be installed  
                        Recommends: desktop-effects-kde-kde3 but it is not going to be installed
                        Recommends: kaffeine-kde3 but it is not going to be installed
                        Recommends: kdebluetooth-kde3 but it is not installable 
                        Recommends: kfind-kde3 but it is not going to be installed
                        Recommends: kipi-plugins-kde3 but it is not going to be installed
                        Recommends: kmag-kde3 but it is not going to be installed
                        Recommends: kmousetool-kde3 but it is not going to be installed
                        Recommends: kopete-kde3 but it is not going to be installed
                        Recommends: kppp-kde3 but it is not going to be installed
                        Recommends: kubuntu-docs-kde3 but it is not installable 
                        Recommends: strigi-applet but it is not installable     
                        Recommends: system-config-printer-kde-kde3 but it is not installable
                        Recommends: network-manager-kde-kde3 but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
abe@swan:~$ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  kdeartwork-emoticons-kde4 sweeper-kde4 blinken parley-data-kde4 kpercentage-kde4
  kdemultimedia-kio-plugins-kde4 kppp-kde4 kdf-kde4 libsbigudrv0 kscd-kde4 kdebase-workspace
  kanagram step-kde4 libksane0 smartpm-core libavutil1d kcalc-kde4 ktux klettres
  kdeartwork-theme-window-kde4 libkiten1 kgeography kfloppy-kde4 libcfitsio3 kruler-kde4 libkipi5
  kgpg-kde4 krfb-kde4 libkiten4-kde4 kgamma-kde4 klatin kscreensaver-kde4 kstars ttf-dustin kbruch
  kdiamond-kde4 kdeartwork-misc-kde4 kde-core kdeaccessibility-kde4 kdegames-mahjongg-data-kde4
  marble-kde4 keduca libvncserver0 kcharselect-kde4 libpostproc1d kdeedu-data kweather kmplot
  kdiamond kalzium kopete-kde4 kolourpaint4-kde4 libcln5 libamrnb3 kalzium-data 
  konqueror-nsplugins-kde4 amor kdewallpapers-kde4 k3b-data ktouch kgeography-data
  kdeedu-kvtml-data kvoctrain kdetoys kcolorchooser-kde4 marble-data-kde4 kwalletmanager-kde4
  libamrwb3 kwordquiz kappfinder-kde4 libqalculate4 kcron-kde4 ttf-sjfonts klettres-data
  ksysguardd-kde4 libkcddb4-kde4 kig libpoppler3 kpackage-kde4 kdepasswd-kde4 kstars-data edict
  libmarble4-kde4 kamera-kde4 khangman ktimer-kde4 kiten-kde4 libopenbabel3 kanjidic
  knetworkconf-kde4 krdc-kde4 kfind-kde4 libkdeedu3 libkdeedu4 kdeartwork-kde4 kwrite-kde4 kiten
  indi kdeedu kpercentage kdemultimedia-kde4 libboost-python1.35.0 juk-kde4 kmix-kde4 kdessh-kde4
  kturtle kdeartwork-style-kde4 kteatime kverbos                                
Use 'apt-get autoremove' to remove them.                                        
The following extra packages will be installed:
  kfind-kde3 kmix-kde3
The following NEW packages will be installed:
  kfind-kde3 kmix-kde3
0 upgraded, 2 newly installed, 0 to remove and 23 not upgraded.
149 not fully installed or removed.
Need to get 0B/581kB of archives.
After this operation, 2077kB of additional disk space will be used.
Do you want to continue [Y/n]?
(Reading database ... 197464 files and directories currently installed.)
Unpacking kfind-kde3 (from .../kfind-kde3_4%3a3.5.10-0ubuntu4~intrepid14_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/kfind-kde3_4%3a3.5.10-0ubuntu4~intrepid14_i386.deb (--unpack):
 trying to overwrite `/usr/share/pixmaps/kfind.xpm', which is also in package kfind
Unpacking kmix-kde3 (from .../kmix-kde3_4%3a3.5.10-0ubuntu1~intrepid6_i386.deb) ...
Leaving `local diversion of /usr/share/autostart/kmix_autostart.desktop to /usr/share/autostart.bkp/kmix_autostart.desktop'
dpkg: error processing /var/cache/apt/archives/kmix-kde3_4%3a3.5.10-0ubuntu1~intrepid6_i386.deb (--unpack):
 trying to overwrite `/usr/share/pixmaps/kmix.xpm', which is also in package kmix
Processing triggers for man-db ...
Errors were encountered while processing:
 /var/cache/apt/archives/kfind-kde3_4%3a3.5.10-0ubuntu4~intrepid14_i386.deb
 /var/cache/apt/archives/kmix-kde3_4%3a3.5.10-0ubuntu1~intrepid6_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)


 kdebase-kde3
 kdebase-runtime-data-common-kde3
 ksmserver-kde3
 konqueror-kde3
 konq-plugins-kde3
 konqueror-nsplugins-kde3
 kmplayer-konq-plugins-kde3


This box was one which had KDE4 via a separate launchpad repository prior to the upgrade.  The system disabled that extra repository during the upgrade, as expected, but the above errors occurred.  I was eventually able to work around most of them with the help of aptitude.  Shouldn't KDE3 icons be somewhere under /opt/kde3 with the rest of the system?