I can't see why your site is getting linked to this page as the page seems to contain a meta refresh to itself! That is unless it has changed since your original post.
This has happened to a couple of sites that I have been involved with, it's a very frustrating problem. Both times the problem was caused by sites that dynamicaly generate a meta refresh through to the affected site.
I contacted Google and got a standard response pointing me to their "Webmasters Guidelines" page.
The dirty cache problem has resolved itself in one case, but the
PR of the page is way down on what it should be. I am hoping that this will change in time.
I will be very interested to hear what response you get, best of luck.