Platform: Windows 7 with AntiVirus Software: avast! Version 4.8 Professional running.
Possible related circumstance: Received messages that Adobe reader was out of date.
But , was unable to initiate a download.
When the Download button is clicked a page explaining the installation steps is presented - the download never starts.
My actions to date:
1) reader_sl was found and removed - no change in download response.
2) Adobe Reader was uninstalled.
3) I have not seen any chatter about this issue.