I have not noticed that at all and I have been through a lot of these types of links at Yahoo.
One thing that I did notice is the Url in that is displayed under the description for that result is malformed as well.
- www.insurance-bad-faith-lawyers.com/../California-wrongful-death-lawyers.asp
As you can see, it does not look natural. This phenomenon may be how the url is referenced at the domain's root page. Is it possible that there is a link off of the domain's root page that has this reference
../California-wrongful-death-lawyers.asp contained within that page, but is actually serving up the correct page to the spider? That would explain the page showing up in the cache at Yahoo, and would explain the malformed Url. I am not familular with ASP, but it could be something in the coding too.
If this is the case, you may have stumbled onto a bug in the way the spider is indexing pages when virtual Url referencing is in use. It is basicly going one level up off of the domain root, which is impossible to do (normally).
I would look for this reference and get it corrected if that is the case. And a letter to Yahoo may help also to get it corrected in their index, if they will do that that is.