Currently Being ModeratedNov 16, 2012 2:28 PM (in response to jakudo)
He should go to the Finder > Go Menu > Go to Folder and type in ~/Library/Preferences
In the Preferences Folder he should find com.apple.imessage.bag.plist and Drag it to the trash
He should then Restart Messages.
This will sort the issue in the pic.
That itself is probably related to the non appearance of the counter on new messages.
I am not sure at this stage about the lack of the message now and then (having been alerted)
The Date/Time order/Sync process is an issue we know about.
It seems if you have an iOS device there is no issue on those.
On the Mac, particularly if it has been Off line the "Sync" process that displays the iMessages plays out like a speeded up chat.
However if you were in conversation on an iPhone and switch to the Mac an new Messages arrive instantly and out of order with the sync process.
It seems the App cannot or does not use the Time Stamps to sort them into proper order.
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 an iPad
"Limit the Logs to the Bits above Binary Images." No, Seriously