Petike the Taffer

The Wiki is currently uneditable, at least for me. See the attached image. I came back yesterday from a visit, turned on the computer, went to the wiki, and I was logged off. I thought "OK, my login simply ran out, it is not indefinite". So I logged in, as usual. However, since then, I have been unable to edit any article on the wiki. Any. Article, discussion, category, no edits can be saved and I always receive this database error. Is this a cache clearing issue, or is this yet another hiccup on part of the official servers ?