It's difficult for me to test, since I don't have that many contacts, and I have Messenger Plus! event notifications for everything, but after changing a few settings, I have so far worked out that "<user> has just signed in" (contact online) notifications are detected, but "<user> says: <message>" (new message) notifications don't.
quote:
Originally posted by Spunky
All I can think of for your problem is that maybe there are different classes for different types of events
Possibly, but the "MSN Popup Spy" script that I based it on only searched for one class, and it seemed to detect all types of notifications.