WP Hacked?

Today I entered a post. It came up fine, but I screwed up the categories.

I went back to change the category but when I hit save, instead of it saving I got a page ( http://www.onewebday.org/wp-admin/post.php ) that just said:

Already hacked by Magic SEO Toolz =)

And my change wouldn’t go thru.

I googled it up and found one or two other mentions, but no solutions.

I d/l’d the WP install to my HD and did a text serach for Toolz but I didn’t turn up anything.

Any suggestions?

joly