[Mediawiki-l] Recent Changes shows nothing!

[Bill Taylor]

When I click on Recent Changes as of this morning, I see only today's 
activity.   a new user added joined the wiki, and a page was 
updated.  No matter what I do to look back in time, I don't see 
anything, even when I tell it to look back 300 days and 500 
edits.  There should be a full year worth of edits there.  I could 
see them yesterday, but not today.

I am running Mediawiki 1.15.1, PHP 5.2.6, and MySQL 4.1.16

Did the new user hack me somehow, or what?  He looks like a spammer, 
but a very mild one.

Bill Taylor