[BUG] Desync Detected
Haven't seen it mentioned anywehere else
Conditions: Skirmish Game 3v3
Played 8 games online, never had this problem before.
Sypmton 1: EVERY 5 Seconds, the below dialog box would pop up.

You cant control your character until the OK button is pressed. Each time the dialog box came up, the Beat# increased.
Notes: No one was talking or chat was broken, but another player left early game which I believe is that he got frustrated with the dialog boxes.
Fix: About 15 minutes in, the person who was causing the error, nekokenny, left - fixing the problem.
Sympton 2: If you have a skill selected that requires you to target something, and the dialog box comes up, you cant see the cursor.
Fix: Move the mouse areound until the Ok button changes colour then click.
Computer Setup: ADSL Modem, Router with the computer in DMZ, ports open.