Here are two of the errors I ran into today. Another one was trying to log in in fact. It had the checkmarks next to username and password, but it didn't do anything when submitting the stuff. It did work when using the login after posting something though.
Using Chrome 27.0.1453.116 @ Win 8 Ent x64
Using Chrome 27.0.1453.116 @ Win 8 Ent x64