I had this problem with my client's website, and that's included in bug #2 in the original post.
When Minify is fixing the css, it grabs (by fault, thus a bug) the last absolute URL and applies it to the rest of the relative URL's.
What that means is, when you have google fonts, and plugins in your setup, the CSS will point to your images on google's servers - as if they are your own.
Of course Google doesn't store the images that are on YOUR blog ;)
The quick-fix for that is to set minify to manual and order the CSS files so all external CSS is loaded last.
What's your site?