debian 6 升级

ghostrider

Debian 6.0 装的lnmp，用apt-get upgrade升级时候出现下列信息，请问是什么问题？

The following packages have been kept back:
  apt apt-utils aptitude base-files bash binutils bison bsdmainutils bzip2 ca-certificates comerr-dev
  coreutils cpp cpp-4.4 curl dmsetup dpkg e2fslibs e2fsprogs file g++ g++-4.4 gawk gcc gcc-4.4 gcc-4.4-base
  gettext gettext-base git ifupdown initscripts iproute iptables iputils-ping krb5-multidev less libacl1
  libalgorithm-diff-xs-perl libattr1 libblkid1 libbsd0 libbz2-1.0 libbz2-dev libc-bin libc-dev-bin libc6
  libc6-dev libc6-i686 libcap2 libcomerr2 libcroco3 libcurl3 libcurl3-gnutls libcurl4-gnutls-dev
  libcwidget3 libdevmapper1.02.1 libedit2 libevent-dev libexpat1 libfreetype6 libfreetype6-dev libfribidi0
  libgcc1 libgcrypt11 libgcrypt11-dev libgdbm3 libglib2.0-0 libglib2.0-dev libgnutls-dev libgnutls26
  libgomp1 libgpg-error-dev libgpg-error0 libgpm2 libgssapi-krb5-2 libgssrpc4 libidn11 libidn11-dev
  libjpeg62 libjpeg62-dev libk5crypto3 libkeyutils1 libkrb5-3 libkrb5-dev libkrb5support0 libldap-2.4-2
  libldap2-dev liblocale-gettext-perl liblockfile1 libltdl-dev libltdl7 libmagic1 libmpfr4 libncurses5
  libncurses5-dev libncursesw5 libnewt0.52 libpam-modules libpam0g libpcre3 libpcre3-dev libpcrecpp0
  libpng12-0 libpng12-dev libpopt0 libpq-dev libpq5 libreadline5 libreadline6 libsasl2-2 libsasl2-dev
  libsasl2-modules libselinux1 libsepol1 libsigc++-2.0-0c2a libslang2 libsqlite3-0 libss2 libssh2-1
  libssl-dev libstdc++6 libstdc++6-4.4-dev libtasn1-3 libtasn1-3-dev libtext-charwidth-perl
  libtext-iconv-perl libudev0 libunistring0 libusb-0.1-4 libuuid1 libwrap0 libx11-6 libx11-data libxapian22
  libxau6 libxcb1 libxdmcp6 libxext6 libxml2 libxml2-dev libxmuu1 libzip-dev locales lynx lynx-cur man-db
  module-init-tools mount nano ncurses-bin netbase ntpdate openssh-client openssh-server openssl passwd
  perl perl-base perl-modules procps psmisc python python-minimal python2.6 python2.6-minimal rsync
  sendmail-bin sgml-base syslog-ng sysvinit util-linux vim vim-common vim-runtime vim-tiny wget whiptail
  xml-core xz-utils zlib1g zlib1g-dev
0 upgraded, 0 newly installed, 0 to remove and 181 not upgraded.

licess

没法说，建议还是别折腾了，vps并不是独服，即使是独服升级都是有很大风险的