I have a new problem that just cropped up after upgrading to 3.4.1
My Avatar on the site front-end is wrong in the admin bar. It shows the avatar of one of the site users.
When I go into the backend (Dashboard) my correct avatar shows up.
When I go to edit my profile, the avatar is correct. When I check the other users profile, their avatar is correct. This is only happening on the front-end admin bar.