cellis@burk:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... The following packages were automatically installed and are no longer required:
  giblib1 libmono-web4.0-cil linux-image-3.16.0-26-generic linux-image-extra-3.16.0-26-generic
  linux-signed-image-3.16.0-26-generic scrot ttf-dejavu-extra
Use 'apt-get autoremove' to remove them.
Done
The following packages have been kept back:
  ca-certificates-mono libmono-2.0-1 libmono-2.0-dev libmono-accessibility4.0-cil
  libmono-c5-1.1-cil libmono-cairo4.0-cil libmono-cecil-private-cil libmono-cil-dev
  libmono-codecontracts4.0-cil libmono-compilerservices-symbolwriter4.0-cil libmono-corlib2.0-cil
  libmono-corlib4.0-cil libmono-corlib4.5-cil libmono-cscompmgd0.0-cil libmono-csharp4.0c-cil
  libmono-custommarshalers4.0-cil libmono-data-tds4.0-cil libmono-db2-1.0-cil
  libmono-debugger-soft4.0a-cil libmono-http4.0-cil libmono-i18n-cjk4.0-cil
  libmono-i18n-mideast4.0-cil libmono-i18n-other4.0-cil libmono-i18n-rare4.0-cil
  libmono-i18n-west4.0-cil libmono-i18n4.0-all libmono-i18n4.0-cil libmono-ldap4.0-cil
  libmono-management4.0-cil libmono-messaging-rabbitmq4.0-cil libmono-messaging4.0-cil
  libmono-microsoft-build-engine4.0-cil libmono-microsoft-build-framework4.0-cil
  libmono-microsoft-build-tasks-v4.0-4.0-cil libmono-microsoft-build-utilities-v4.0-4.0-cil
  libmono-microsoft-build4.0-cil libmono-microsoft-csharp4.0-cil libmono-microsoft-visualc10.0-cil
  libmono-microsoft-web-infrastructure1.0-cil libmono-oracle4.0-cil libmono-parallel4.0-cil
  libmono-peapi4.0a-cil libmono-posix4.0-cil libmono-profiler libmono-rabbitmq4.0-cil
  libmono-relaxng4.0-cil libmono-security4.0-cil libmono-sharpzip4.84-cil libmono-simd4.0-cil
  libmono-sqlite4.0-cil libmono-system-componentmodel-composition4.0-cil
  libmono-system-componentmodel-dataannotations4.0-cil libmono-system-configuration-install4.0-cil
  libmono-system-configuration4.0-cil libmono-system-core4.0-cil
  libmono-system-data-datasetextensions4.0-cil libmono-system-data-linq4.0-cil
  libmono-system-data-services-client4.0-cil libmono-system-data-services4.0-cil
  libmono-system-data4.0-cil libmono-system-design4.0-cil libmono-system-drawing-design4.0-cil
  libmono-system-drawing4.0-cil libmono-system-dynamic4.0-cil
  libmono-system-enterpriseservices4.0-cil libmono-system-identitymodel-selectors4.0-cil
  libmono-system-identitymodel4.0-cil libmono-system-io-compression-filesystem4.0-cil
  libmono-system-io-compression4.0-cil libmono-system-json-microsoft4.0-cil
  libmono-system-json4.0-cil libmono-system-ldap-protocols4.0-cil libmono-system-ldap4.0-cil
  libmono-system-management4.0-cil libmono-system-messaging4.0-cil
  libmono-system-net-http-formatting4.0-cil libmono-system-net-http-webrequest4.0-cil
  libmono-system-net-http4.0-cil libmono-system-net4.0-cil libmono-system-numerics4.0-cil
  libmono-system-reactive-core2.2-cil libmono-system-reactive-debugger2.2-cil
  libmono-system-reactive-experimental2.2-cil libmono-system-reactive-interfaces2.2-cil
  libmono-system-reactive-linq2.2-cil libmono-system-reactive-observable-aliases0.0-cil
  libmono-system-reactive-platformservices2.2-cil libmono-system-reactive-providers2.2-cil
  libmono-system-reactive-runtime-remoting2.2-cil libmono-system-reactive-windows-forms2.2-cil
  libmono-system-reactive-windows-threading2.2-cil libmono-system-runtime-caching4.0-cil
  libmono-system-runtime-durableinstancing4.0-cil
  libmono-system-runtime-serialization-formatters-soap4.0-cil
  libmono-system-runtime-serialization4.0-cil libmono-system-runtime4.0-cil
  libmono-system-security4.0-cil libmono-system-servicemodel-activation4.0-cil
  libmono-system-servicemodel-discovery4.0-cil libmono-system-servicemodel-routing4.0-cil
  libmono-system-servicemodel-web4.0-cil libmono-system-servicemodel4.0a-cil
  libmono-system-serviceprocess4.0-cil libmono-system-threading-tasks-dataflow4.0-cil
  libmono-system-transactions4.0-cil libmono-system-web-abstractions4.0-cil
  libmono-system-web-applicationservices4.0-cil libmono-system-web-dynamicdata4.0-cil
  libmono-system-web-extensions-design4.0-cil libmono-system-web-extensions4.0-cil
  libmono-system-web-http-selfhost4.0-cil libmono-system-web-http-webhost4.0-cil
  libmono-system-web-http4.0-cil libmono-system-web-mvc3.0-cil libmono-system-web-razor2.0-cil
  libmono-system-web-routing4.0-cil libmono-system-web-services4.0-cil
  libmono-system-web-webpages-deployment2.0-cil libmono-system-web-webpages-razor2.0-cil
  libmono-system-web-webpages2.0-cil libmono-system-web4.0-cil
  libmono-system-windows-forms-datavisualization4.0a-cil libmono-system-windows-forms4.0-cil
  libmono-system-windows4.0-cil libmono-system-xaml4.0-cil libmono-system-xml-linq4.0-cil
  libmono-system-xml-serialization4.0-cil libmono-system-xml4.0-cil libmono-system2.0-cil
  libmono-system4.0-cil libmono-tasklets4.0-cil libmono-webbrowser4.0-cil
  libmono-webmatrix-data4.0-cil libmono-windowsbase4.0-cil libmono-xbuild-tasks4.0-cil
  libmonoboehm-2.0-1 libmonoboehm-2.0-dev linux-generic linux-headers-generic linux-image-generic
  linux-signed-generic linux-signed-image-generic mono-4.0-gac mono-4.0-service mono-complete
  mono-csharp-shell mono-devel mono-dmcs mono-gac mono-jay mono-mcs mono-runtime
  mono-runtime-common mono-runtime-sgen mono-utils mono-xbuild monodoc-base monodoc-manual
0 upgraded, 0 newly installed, 0 to remove and 158 not upgraded.
cellis@burk:~$