HI,
I had not noticed if one device "read" the message whether other devices also mark the message.
I have just tried to send a message from my iPhone to the Apple ID and the Send process has not finished them for me to check.
In fact after several minutes of waiting I got a Red "Not Delivered " exclamation mark.
However my main point was the actual Messages are otherwise untouched.
7:07 PM Friday; September 21, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
G4/1GhzDual MDD (Leopard 10.5.8)
MacBookPro 2Gb (Snow Leopard 10.6.8)
Mac OS X (10.6.8),
Couple of iPhones and and iPad
"Limit the Logs to the Bits above Binary Images." No, Seriously