have you cut the RED wire in the USB cable..?

I'm not sure how your hubs work, but when the hubs are powered through the power supply there's no need for the RED wire in the USB cable.

If it's not cut then you'll get one hub powering the other via the RED wire.
you can test this 'power-backing' theory by plugging one hub without the power supply plugged in, into a hub which has the power supply plugged in and then plug one usb erupter in the hub without the power supply and you'll probably see it power up.  It's safer to cut the RED wire, because if a power supply fails then only erupters in that hub go down.  Otherwise more will go down as more power supplies get overloaded.

If you're not sure about what I'm talking about, reply and I'll try and take a couple pics of what I did to my cables.

$200 If you accept paypal or post it on an Ebay like site

Hi thanks I am using 3 hubs and one of them is plugged into the raspberri pi itself I am guessing this one is the problem. I have a fan on all of them.. I will be buying a better hub however. I have wasted a lot of money on hubs so far

ps i am a noob. Do my stats look normal?

Name   ID   Temp   MH/s   Accept   Reject   Error   Utility   Last Share Time
AMU   0   0   335.66   258   0   35   0.29   21:03:55
AMU   1   0   335.72   269   1   54   0.3   21:11:22
AMU   2   0   335.57   266   1   32   0.3   21:10:29
AMU   3   0   335.98   281   2   34   0.31   21:10:37
AMU   4   0   335.71   245   0   39   0.27   21:07:18
AMU   5   0   335.93   269   0   45   0.3   21:11:54
AMU   6   0   335.95   269   1   45   0.3   21:11:50
AMU   7   0   335.72   256   1   42   0.28   21:10:09
AMU   8   0   335.77   252   0   40   0.28   21:07:05
AMU   9   0   348.97   22   2   1922   0.02   21:06:55
AMU   10   0   335.97   261   0   42   0.29   21:12:26
AMU   11   0   335.57   248   1   46   0.28   21:12:40
Totals   12      4042.52   2896   9   2376   3.22   

Regarding inventory shortage at friedcat and co: all my orders are allocated and shipping.
In addition to what is arriving Friday, I have 4 more LARGE orders on their way to me. 
We'll have stock, no worries!

Everyone got a tracking number or a PM from me.  all updated.

"THE LUCKY 13" is shipping out tomorrow folks.
DHL has called with scheduled delivery for tomorrow 

not bad on speed, huh?

I've joined with single 7850 GPU and making 0.01 BTC a day which isn't bad. There were two minor incidents that I'd like an answer to.

First, yesterday I heard my GPU cranking really loud and upon inspection I was getting several hundred stale (connections?) in GUIMiner. At this time my account showed 0 hash rate. So I restarted my miner and everything came back to normal. I'd like to understand what happened there and what I can do to avoid it or possibly burning out my GPU.

Second, today everything was humming along and at the end of my work day I checked my account and it sowed last share 7 hours ago. I don't think I had made any contribution during this time. However my GUIMiner was clicking just normal showing 352 MH/S - In statistics, I have no shares from 19195 to 19199 while GUIMiner seem to be running normal. So I'd also like to find out what happened here?

I'm getting some USB ASIC chips on Monday and plan on changing over to BFGMiner. Is this the right thing to do with slush's pool?

Appreciate any input and keep up the good work.

Pool failure detected... I suppose...