Comment 16 for bug 593290

I think it's probably from the speed at which they're generated. I can generate them quickly and keep black space in each new terminal visible by clicking very quickly into a larger area and continuing to create new terminals.

Also.. making many terminals in a space not at a very high speed only a small lag is noticed.

As for the gtk signal...
Maybe you could have a variable sitting in terminator that..
- Config changeable value
- Value set for max generating terms.
- Request to build term
- If $being_built < $max_generating
-- Term starts being generated; $being_built += 1;
-- Term built; $being_built -= 1;

Just a thought..