The packages to be newly installed are the same as the packages that should be autoremoved!

I am noticing a very peculiar thing just after shifting to Debian-based distros. root@Am-I-Helpful:~# uname -a Linux Am-I-Helpful 4.3.0-kali1-amd64 #1 SMP Debian 4.3.3-5kali4 (2016-01-13) x86_64 GNU/Linux The output of apt-get update && apt-get dist-upgrade is : root@Am-I-Helpful:~# apt-get update && apt-get dist-upgrade Hit:1 http://heanet.dl.sourceforge.net/project/ubuntuzilla/mozilla/apt all InRelease Hit:2 http://kali.mirror.garr.it/mirrors/kali sana InRelease Hit:3 http://kali.mirror.garr.it/mirrors/kali-security sana/updates InRelease Reading package lists... Done Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages were automatically installed and are no longer required: libavcodec56 libavformat56 libavresample2 libavutil54 libdvbpsi9 libfreerdp-rail1.1 libpostproc52 libswscale3 libvncclient0 libvpx1 libx264-142 Use 'apt autoremove' to remove them. The following NEW packages will be installed: libavcodec56 libavformat56 libavresample2 libavutil54 libdvbpsi9 libfreerdp-rail1.1 libpostproc52 libswscale3 libvncclient0 libvpx1 libx264-142 The following packages have been kept back: libarchive13 vlc vlc-nox vlc-plugin-notify vlc-plugin-samba 0 upgraded, 11 newly installed, 0 to remove and 5 not upgraded. Need to get 0 B/5,605 kB of archives. After this operation, 14.8 MB of additional disk space will be used. Do you want to continue? [Y/n] n Abort. The surprising thing is : It says The following packages were automatically installed and are no longer required: libavcodec56 libavformat56 libavresample2 libavutil54 libdvbpsi9 libfreerdp-rail1.1 libpostproc52 libswscale3 libvncclient0 libvpx1 libx264-142 Use 'apt autoremove' to remove them. On the other end, at the very next line it also states The following NEW packages will be installed: libavcodec56 libavformat56 libavresample2 libavutil54 libdvbpsi9 libfreerdp-rail1.1 libpostproc52 libswscale3 libvncclient0 libvpx1 libx264-142 These are the same list of packages which are asked to be removed! I am not getting this as to how it is coming into picture. The content of my /etc/apt/sources.list is : # deb cdrom:[Debian GNU/Linux 2016.1 _Kali-rolling_ - Official Snapshot amd64 LIVE/INSTALL Binary 20160120-18:14]/ kali-rolling contrib main non-free #deb cdrom:[Debian GNU/Linux 2016.1 _Kali-rolling_ - Official Snapshot amd64 LIVE/INSTALL Binary 20160120-18:14]/ kali-rolling contrib main non-free #deb http://downloads.sourceforge.net/project/ubuntuzilla/mozilla/apt all main #deb http://downloads.sourceforge.net/project/ubuntuzilla/mozilla/apt all main deb http://http.kali.org/kali sana main non-free contrib deb http://security.kali.org/kali-security/ sana/updates main contrib non-free deb http://downloads.sourceforge.net/project/ubuntuzilla/mozilla/apt all main Could someone please clarify as to what is happening here? How to solve this ambiguous case?