Mike has locked the database while he is working on updating the mediawiki and moodle forums, and migrating to a new server. From the mediawiki, if you click on "my preferences" it tells you this. He was hoping to have it completed sooner, but there have been some technical difficulties that need to be resolved.
WeBWorK Main Forum
Changing password for UsingWW/Wiki
This forum has a limit to the number of forum postings you can make in a given time period - this is currently set at 10 posting(s) in 1 day