You are welcome. What USB hub are you using, and how many erupters. I really want something like the Anker, top mounted plugs and 10 ports that works with the Pi?
There actually is a great 49 Port USB 2.0 hub that works with the RPi, but unfortunatly that hub from Cambrionix costs a small fortune.
Be aware of always leaving like 0.5A headroom on a hub, so if you get a 5 Port hub with a 2.5A power supply only plug in 4 Block Erupter. On a 7 Port with a 3A power supply max 5 Sticks, with a 4A power supply you can use all 7 ports. This will help with stability and longer life of the hub.