-Open The extension repository and search for e.g. presentation minimizer. 
-On the search result site select the first entry "Sun Presentation Minimizer",
not a certain version.
-The result is the presentation minimizer extension with a listing of all
available versions with the older ones ( 1.0 in this case) staying at the
beginning and the newer versions (in this case 1.0.1) are shown below the older
ones. Instead the newer versions have to be shown at the beginning. This is
already considered in the search result list but not within a certain extension.