None.
Also, units shouldn't appear when preplaced unless the player is there, and if you use Current Player, and put the triggers under the player, they won't make units for that player when he is gone, since they won't run.
Vrael -- NudeRaider
JamaL -- Glad to see SEN will never die. Kudos to whoever is paying the hosting fees these days!
O)FaRTy1billion[MM], Zergy