I am using Ubuntu 13.04 64 bit and I have a problem with Ubuntu software center; basically it fails to find new apps. For example I read an article on omgubuntu.co.uk such as "... was added to USC" and try to find it. But I cannot find it. Lightread, fogger, stormcloud etc.
Additional notes: That is not about updating or ubuntu 13.04 being in process. I have been using Ubuntu for a very long time and that was always the problem.