I've used Word 2011 twice now and both times Norton Antivirus 11.1.1 perceived Word autosave as a virus and quarantined the doc. Then Word said it had encountered a loss of data connection and needed to close. There was no way to save the work I'd done on the doc. (This is just a warning to others. As for me, I've removed Norton and gone to Intego because I found it too hard to reach a live support person about this problem.)