A small number of users have reported problems downloading the software in the that the download stalls, or fails, then they have to restart the download again from the beginning. The problem will often be hit a few times before the download successfully completes.
In all cases to date the problem has been due to local network issues, which is something outside of our control. For example, the local ADSL connection drops out and the download fails, or the connection becomes too slow and the browser disconnects from the server.