Everything was working fine for several days. Several MS word documents were uploaded without trouble, and I checked that they could be viewed from a student account.
Then, all of a sudden, all MS word documents fail to open. It opens up the word plug-in and shows the ruler, but the text area contains:
<meta http-equiv='refresh' content='0; url=http://math.hhs.fuhsd.org/moodle/login/index.php?PHPSESSID=25e7e6b1ae9702bae7376227f87a328c'>
What happened? It hasn't affected Adobe acrobat files.