After a fresh restart, the notify-send command on Cinnamon desktop successfully shows a couple of notifications. But afterwards (within the first 5 minutes, and after 3 notifications have been executed) they don't appear anymore; neither on the desktop nor in the history of notifications in the panel applet.
The command itself outputs nothing, and the man page doesn't mention anything about an error log. Is there some simple anti-spam limit maybe per-application? How do I find out why this happens?
