How can I shut off "Messaging Agent"??
iMac, OS X Mavericks (10.9.1), Messaging Agent: How to shut it of
Got it. Messaging agent was looking for Facebook which had been deleted a while ago. Found and entered Keychain located in Utilities...then found a "Facebook" entry which I deleted. Now on boot up there is NO Messaging Agen Warning wanting to get into "Keychain"!
Hope that this resolution helps someone!
Merry Christmas and Happy New Year!