hub:~# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages have been kept back:
  bind9 bind9utils libbind-dev libbind9-50 libisccc50 libisccfg50 liblwres50
The following packages will be upgraded:
  apache2 apache2-doc apache2-mpm-prefork apache2-utils apache2.2-common base-files dpkg dpkg-dev dselect libc6 libc6-dev libmysqlclient15off libperl5.10 libpq5 libssl-dev libssl0.9.8 libxml2 libxml2-dev linux-libc-dev locales man-db
  mysql-common nscd openssl perl perl-base perl-modules tzdata
28 upgraded, 0 newly installed, 0 to remove and 7 not upgraded.
Need to get 41.7MB of archives.
After this operation, 61.4kB of additional disk space will be used.
Do you want to continue [Y/n]?