I am using QGIS 2.0.1 running off of a Ubuntu computer.
I have been going through some basic tutorials (http://fossgeo.org/free-qgis-courses/) and have come up against a small and silly little obstacle. Some of the problems and examples involved in these tutorials require specific CRS presets. When I first started working, my copy of QGIS had all of the different CRS types that came up. However, after a few days something appears to have happened and I no longer have access to a bunch of the CRS types referenced in the tutorials. I have tried looking them up by name and EPSG# to no avail. I have tried reinstalling the program.
I have not been able to find a download or plugin to restore all of the CRS presets, does such a thing exist?