Upgrade from Etch to Lenny

[DecIRC]

I have a server running Debian Etch and ispCP 1.0.0 OMEGA build: 20090225.

I'd like to upgrade it.

I'd like to know if it's better to upgrade first ispCP or the OS.

For the OS upgrade, the following proposal is made

Code:

The following packages will be REMOVED:
  libcurl3-dev libcurl3-openssl-dev libgssapi2 libpci2 libperl5.8 libsasl2 libssp0 linux-kernel-headers proftpd-mysql
The following NEW packages will be installed:
  bind9utils cpp-4.3 db4.6-util expect g++-4.3 gcc-4.3 gcc-4.3-base libbind9-50 libc-client2007b libcap2 libcwidget3 libdb4.5
  libdb4.6 libdevmapper1.02.1 libdns55 libept0 libglib2.0-0 libgmp3c2 libgnutls26 libgomp1 libgpm2 libgsm1 libgssglue1 libisc52
  libisccc50 libisccfg50 libkeyutils1 libldap-2.4-2 liblwres50 libmime-tools-perl libmpfr1ldbl libmpg123-0 libpci3 libperl5.10
  libpq5 libradiusclient-ng2 libsamplerate0 libsnmp15 libsox-fmt-alsa libsox-fmt-base libsox0 libssh2-1 libstdc++6-4.3-dev
  libsys-hostname-long-perl libtalloc1 libustr-1.0-1 libwbclient0 libxapian15 libxcb-xlib0 libxcb1 linux-libc-dev lynx-cur lzma
  netcat-traditional openssl-blacklist proftpd-basic proftpd-mod-ldap proftpd-mod-mysql proftpd-mod-pgsql python-sepolgen python2.5
  python2.5-minimal tcl8.4 ttf-dejavu-core ttf-dejavu-extra
The following packages will be upgraded:
  adduser apache2 apache2-mpm-worker apache2-utils apache2.2-common apt apt-utils aptitude awstats base-files base-passwd bash bc
  bind9 bind9-host binutils bsdmainutils bsdutils build-essential busybox bzip2 ca-certificates chkrootkit comerr-dev console-common
  console-data console-tools convmv coreutils courier-authdaemon courier-authlib courier-authlib-userdb courier-base courier-imap
  courier-maildrop courier-pop cpio cpp cpp-4.1 cron dc debconf debconf-i18n debianutils defoma dhcp3-client dhcp3-common
  dictionaries-common diff dmidecode dnsutils doc-debian doc-linux-text dpkg dpkg-dev dselect e2fslibs e2fsprogs ed eject file
  findutils finger fontconfig fontconfig-config fping ftp g++ g++-4.1 gcc gcc-4.1 gcc-4.1-base gettext-base gnupg gpgv grep
  groff-base gzip hellanzb hostname iamerican ibritish ifupdown info initscripts iproute iptables iputils-ping ispell klibc-utils
  klogd laptop-detect less libacl1 libapache2-mod-fastcgi libapache2-mod-fcgid libapr1 libaprutil1 libasound2 libatm1 libattr1
  libaudio2 libberkeleydb-perl libbit-vector-perl libblkid1 libbz2-1.0 libc6 libc6-dev libc6-i686 libcarp-clan-perl libcomerr2
  libconsole libconvert-binhex-perl libcrypt-blowfish-perl libcrypt-cbc-perl libcrypt-passwdmd5-perl libcurl3 libdate-calc-perl
  libdate-manip-perl libdb4.2 libdbd-mysql-perl libdbi-perl libdigest-hmac-perl libdigest-sha1-perl libedit2 libevent1 libexpat1
  libfam0 libfontconfig1 libfreetype6 libgc1c2 libgcc1 libgcrypt11 libgd2-xpm libgpg-error0 libice6 libidn11 libidn11-dev
  libiksemel-dev libiksemel3 libio-multiplex-perl libio-stringy-perl libjpeg62 libkadm55 libklibc libkrb5-dev libkrb53 liblcms1
  liblocale-gettext-perl liblockfile1 libltdl3 libltdl3-dev libmad0 libmagic1 libmail-sendmail-perl libmailtools-perl libmhash2
  libmime-perl libmysqlclient15off libncurses5 libncurses5-dev libncursesw5 libnet-cidr-perl libnet-dns-perl libnet-libidn-perl
  libnet-netmask-perl libnet-server-perl libnet-smtp-server-perl libnewt0.52 libnfsidmap2 libodbcinstq1c2 libogg-dev libogg0
  libpam-modules libpam-runtime libpam0g libpcre3 libpng12-0 libpopt0 libqt3-mt libradius1 libreadline5 librpcsecgss3 libsasl2-2
  libsasl2-modules libselinux1 libsemanage1 libsensors3 libsepol1 libsigc++-2.0-0c2a libslang2 libsm6 libsnmp-base
  libsnmp-session-perl libspeex-dev libspeex1 libsqlite3-0 libss2 libssl-dev libssl0.9.8 libstdc++6 libstdc++6-4.1-dev libsysfs2
  libt1-5 libtasn1-3 libtasn1-3-bin libterm-readkey-perl libterm-readpassword-perl libtext-charwidth-perl libtext-iconv-perl
  libtext-wrapi18n-perl libtimedate-perl libusb-0.1-4 libuuid1 libvolume-id0 libvorbis-dev libvorbis0a libvorbisenc2 libvorbisfile3
  libwrap0 libx11-6 libx11-data libxau6 libxcursor1 libxdmcp6 libxext6 libxfixes3 libxft2 libxi6 libxinerama1 libxml2 libxml2-dev
  libxpm4 libxrandr2 libxrender1 libxt6 lilo linuxlogo locales login logrotate lsb-base lsof lynx m4 make makedev man-db manpages
  manpages-de manpages-es manpages-fr manpages-fr-dev manpages-fr-extra manpages-it manpages-pl mawk mbr mime-support mktemp mlock
  module-init-tools mount mpack mpg123 mtools mtr-tiny mysql-client mysql-client-5.0 mysql-common mysql-server mysql-server-5.0
  nagios-nrpe-server nagios-plugins nagios-plugins-basic nagios-plugins-standard nano ncurses-base ncurses-bin ncurses-term
  net-tools netbase netcat nload ntpdate odbcinst1debian1 openbsd-inetd openssh-blacklist openssh-client openssh-server openssl
  original-awk oss-compat par2 passwd patch pciutils perl perl-base perl-modules php5-cgi php5-common php5-gd php5-idn php5-imap
  php5-mcrypt php5-mhash php5-mysql pkg-config policycoreutils policyd-weight postfix postgrey procps proftpd psmisc python
  python-central python-minimal python-newt python-selinux python-semanage python-support python-twisted-bin python-twisted-core
  python-twisted-web python-zopeinterface python2.4 python2.4-minimal radiusclient1 readline-common reiser4progs reportbug rkhunter
  rsync samba-common sasl2-bin screen sed sharutils smbclient snmp sox ssh ssl-cert strace sysklogd sysv-rc sysvinit sysvinit-utils
  tar tasksel tasksel-data tcpd telnet texinfo time traceroute ttf-dejavu tzdata ucf udev unixodbc unixodbc-dev unrar update-inetd
  usbutils util-linux vim vim-common vim-runtime vim-tiny w3m wamerican wget whiptail whois x11-common zlib1g zlib1g-dev
380 upgraded, 65 newly installed, 9 to remove and 0 not upgraded.
Need to get 242MB of archives.
After unpacking 134MB of additional disk space will be used.
Do you want to continue [Y/n]?

I always have a stress regarding the package to remove... Is there a risk ?

Thanks for your advice...

Regards
Cedric