i have installed debian from etch dvds. now i'd like to change to lenny or sid how do i do it??? i tried adding the following line to sources.list
deb http://ftp.de.debian.org/debian lenny main then in terminal i typed apt-get update; but i got error.. (pls see below) gn cdrom://[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 DVD Binary-1 20070407-11:40] etch Release.gpg Ign cdrom://[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 DVD Binary-1 20070407-11:40] etch Release Ign cdrom://[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 DVD Binary-1 20070407-11:40] etch/contrib Packages/DiffIndex Ign cdrom://[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 DVD Binary-1 20070407-11:40] etch/main Packages/DiffIndex Get:1 http://ftp.de.debian.org etch Release.gpg [386B] Get:2 http://ftp.de.debian.org lenny Release.gpg [189B] Get:3 http://security.debian.org etch/updates Release.gpg [189B] Hit http://ftp.de.debian.org etch Release Hit http://security.debian.org etch/updates Release Get:4 http://ftp.de.debian.org lenny Release [74.5kB] Ign http://security.debian.org etch/updates/main Packages/DiffIndex Ign http://security.debian.org etch/updates/contrib Packages/DiffIndex Ign http://security.debian.org etch/updates/main Sources/DiffIndex Ign http://security.debian.org etch/updates/contrib Sources/DiffIndex Hit http://security.debian.org etch/updates/main Packages Hit http://security.debian.org etch/updates/contrib Packages Hit http://security.debian.org etch/updates/main Sources Hit http://security.debian.org etch/updates/contrib Sources Ign http://ftp.de.debian.org etch/main Packages/DiffIndex Get:5 http://ftp.de.debian.org lenny/main Packages [5358kB] Hit http://ftp.de.debian.org etch/main Packages Fetched 5432kB in 37s (144kB/s) Reading package lists... Error! E: Dynamic MMap ran out of room E: Error occurred while processing roundcube-pgsql (NewVersion1) E: Problem with MergeList /var/lib/apt/lists/ftp.de.debian.org_debian_dists_lenny_main_binary-i386_Packages E: The package lists or status file could not be parsed or opened.