Google looks to be testing, or maybe it is a bug, capitalizing the URL or breadcrumb part of the snippets in the search results. I see a number of folks on Twitter chatting about it and I have numerous screen shots of this in action.

Here are some screen shots Chris Jones from Screaming Frog sent me via email showing with the capitalization and without.

With Capitalization:

Without Capitalization:

Here are more screen shots from Twitter:

There are even complaints about this in the Google Webmaster Help forums.

Do you see this?

Forum discussion at Google Webmaster Help.