All pages at moodle.org currently report at top of page: "Error: Could not insert a new entry to the Moodle log"
Also, some pages, like the front page, do not work for me.
Some pages, like the front page and the course pages, are showing a big blank space under the header, so that one could think there's no content in it.
The bug seems now to have gone.
Database repaired by Eloy