I've just gone to ebay from a google search, pressed on the 'sign in' link at the top of the page near the logo, and when I looked down the bottom at the padlock, it has a red circle with a white exclamation mark in it....the message says 'Warning Contains unauthenticated content".
I backed out, and went back through the Welcome to Ebay Sign in, (large red button on home page) and got the usual lock.
Then I went back out and tried each again and got the same message on the Welcome to Ebay page sign in but not with the sign in link near the logo? huh?.....don't want to sign in until I find out what it is......does anybody know?