Create a trigger, make a death condition and set a switch named Respawn.
Create another trigger, letting it trigger when Respawn is set.
You must set deaths by using a set death action and then clearing the Respawn switch you set earlier. Have it wait exactly 3000 milliseconds after all this.
Then you can have the trigger create a new unit at a specific location.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.