Comment 14 for bug 270689

Do you can enable the XML console (with CTRL-SHIFT-D), and see whether the sending party sends the thread element in the chat message? I guess not. Do you know what client the other party uses?

I tested between two Coccinella clients, which actually sends the thread element, and it worked fine for me.

We could also change the text in the popup to "... just sent you a chat message!" ;)

Otherwise we could try the following:
1. On the first incoming chat message from someone remember from whom and when we got a message and trigger the event.
 2. On subsequent incoming chat messages within a given time interval, compare with the saved time of the first message do not trigger the event
 3. Repeat with Step one, update the timestamp in the array, and trigger the event again

What would be a "reasonable" default time interval? 10 minutes? Maybe the time interval should be configurable in the "Chat" contact actions for the user?