How dare you blame my pride and joy?! :p
It's supposed to spawn zombies infinitely, it's a gold farm...but it sounds like something they changed in the latest updates has "broken" it, because it used to not work at all unless you were very close to it (as a farm, though, it theoretically would be better with the new behavior, aside from the crashing).
If someone wants to disable all the portals by removing a block from each or whichever other method you choose, it's fine by me. I haven't played in about 6 months. :eek:

