I did an dist-upgrade to ubuntu 14.04 and it uninstalled QGIS and related packages. I tried to re-install it and I receive the following error about unmet dependencies.
The following packages have unmet dependencies: qgis : Depends:
libgdal.so.1-1.11.1 but it is not installable
Recommends: qgis-plugin-grass but it is not going to be installed
Recommends: qgis-plugin-globe but it is not going to be installed E: Unable to correct problems, you have held broken
packages.
QGIS version in the repos of Ubuntu is older that qgis.org version. For this reason it is preferable to install with repos of qgis.org. Please, see my answer in:
QGIS updating problems