Slurp Looking for Pages Not on My Website!

I'm even ranking for keywords not on my site...

[BillyS]

I just noticed that slurp is trying to fetch pages that are not on my site. I use php with mod_rewrite so all my pages are in the form:

www.sitename.com/article-name/

But slurp is looking for stuff like this:

www.sitename.com/dracula.html

This website has nothing to do with dracula...

I also noticed that I am getting referals from Yahoo Korea for a product name that I have nowhere on my site. When I looked at the query, sure enough, there was my site with the word displayed in the search results. It's like my site was mingled with others.

Has anyone seen this before?