created on Nov 5, 2012 10:20:42 PM
— modified on Nov 5, 2012 10:23:01 PM
created on Nov 6, 2012 10:01:14 AM
Hi, the little (1) tends to mean a message is waiting for you to read. The triangle does mean that a message was unsent... Perhaps the message was unsent and eventually re-sent and messenger did not reset itself.
Try and reset it and see if the triangle disappears.