This is something that I have noticed happening on my blog http://robcubbon.com a couple of times.
I'm on a page and if I hover over or click any of the links, for example, the latest posts links, they are https: and, of course, are considered by the browser to be bad links.
Both of the times this has happened I have refreshed the original page and the problem goes away.
I'm running Genesis and the plugins are.
Here are my plugins:
Contact Form 7
Feedburner Feed Replacement
FitVids for WordPress
Genesis Simple Comments
Genesis Simple Edits
Subscribe to Comments Reloaded
W3 Total Cache
Anyone ever experienced this before?