When I ran that command (select * from pg_stat_activity"), it returned the first six lines of the scripts. I'm fairly sure it has gotten a bit beyond that (been running over 24 hours now, and the size has increased about 300 GB). Am I missing something for it to tell me what the last line processed was?
I agree with what John R Pierce says about your GUI lumping all of it into one statement. What you can do is get indirect evidence by looking to see which rows are set. I'm assuming that your IP ranges are non-overlapping, so just do a binary search until you narrow it down to see how far along you are.
