Not sure if this is relevant to this bug or not, I get same message popups with the Mail Notifcation plugin enabled on evolution. Running ubuntu, metacity 1:2.25.144-0ubuntu1, evolution 2.25.91-0ubuntu2. Volume and brightness notifcations appear as they should (besides the missing icons related to another bug)
Not sure if this is relevant to this bug or not, I get same message popups with the Mail Notifcation plugin enabled on evolution. Running ubuntu, metacity 1:2.25. 144-0ubuntu1, evolution 2.25.91-0ubuntu2. Volume and brightness notifcations appear as they should (besides the missing icons related to another bug)