1.5.1 is the first public release of the Context-aware Activity Notification System (CANS). I don't consider this version to be of production quality at this time. I've changed too many things recently and I've been the only person to test this version to say its ready for prime time but you should be able to install, configure, and use it reliably. I just don't know how well it will perform under heavy use. Please test it on a development server before putting into production at your institution.
If you have any questions, concerns, or comments, send me an email at chris at cansaware dot com.