Probably NOT big deal, but...
I did a site:example.com search for my own site and I noticed a strange breadcrumb and a strange URL listed in the search results for my site.
Most of my breadcrumbs are displayed on the search results pages like this:
example.com > widgets > blue widgets
This one page had the breadcrumbs listed like this:
example.com > ... > blue widgets
Also, when I hover the mouse over the link in the search results to that page, the link DIRECTLY to that page appears in the bottom of the browser (the place where you can preview the destination URL when you hover over the link).
So for other URLs to my site on the SERPs, it will show:
example.com/widgets/blue_widgets.html
But for the page that had the messed up breadcrumbs, when I hover over the link in the SERPs, the URL that is displayed is
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=26&cad=rja&uact=8&ved=0CNQBEBYwGQ&url=http [rest of url here]
Anyway, just wondered if it might mean something. I still get traffic to that page, and I get a 200 / ok response with google's fetch as googlebot, so don't really know what is up with it.