[Rain]

I've cleared history, cache, and cookie. I can't find an option to clear all the urls in the location bar. Does anyone know how?

[TheIceMan]

Try Resetting Safari. I think it should clear the URL bar.

[f1000]

Somebody correct me if I'm wrong, but I believe the Address Bar always autocompletes the URL's of bookmarks. In order to delete those URL's, you have to delete the bookmarks themselves.

[SupahCoolX]

Right. The Location bar stores all addresses in your History and Bookmarks. So, to completely clear everything out, you'd have to delete both.