# apt-get upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
The following packages have been kept back
aalib1 alsa-source apache apache-common apt apt-show-versions apt-utils
aspell-bin base-config base-passwd bash bin86 bind9-host binutils bison
blt
bluefish bonobo bonobo-activation bonobo-conf bsdmainutils bsdutils c2man
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...
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slang1 sndconfig ssh strace svgalibg1 swat synaptic syslinux sysvinit
t1lib1
tar tasksel tcl8.0 tcl8.3 tcpd tcsh telnet texinfo textutils time tk8.3
usbutils usbview util-linux v4l-conf vacation wenglish wget whiptail whois
xaw3dg xawtv xawtv-plugins xmms xpdf xpdf-reader xpdf-utils xscreensaver
xscreensaver-gnome yelp zlib1g zlib1g-dev
0 packages upgraded, 0 newly installed, 0 to remove and 455 not upgraded.