I don't know how these guys with 100's of Block Eruptors do it.  I'm trying to run 32 of them off of one Ubuntu 12.10 box running BFGMiner 3.1.4 right now, no matter what I try, I can't seem to get them all to work stable together.  I'm using D-Link DUB-H7 powered USB hubs, and it's kicking my ass.  Anyone got suggestions? Ideas?

Some just don't hash at all when in the big group, but do fine in individual testing.  It's not contained to certain ports either.  The problem just moves around the more I mess with it.