same on smp5. Not only 10 ghasts but the whole nether is a sea of fire as a result of some other poor sod running the gauntlet
Aikar said he would update the mob cap limit to stop the ghast problems last night. It obviously hasn't happened. Anyway, Ghasts spawn on the ground, and then they float up and start flying, which leaves more room for other ghasts to spawn. And when there's more room for mobs to spawn it overloads.
I'm currently making the last of my stuff to lay siege and retake my land in the nether from these things. Just a few more fire res potions. I'm so desperate to kill them I'm going to be using one of my precious ghast tears.