My 4 original hubs are still running stable for almost 1 month now and I just added 4 more last week.  I really love these hubs.

  you're running 10 in them? 3 amps should only support 6. is the power brick hot?

USB 3.0 is 12V 3A = 36W is more than enough

I bought a Balance Form 10 port USB 2.0 Hub from Amazon (with my prime account - free 2 day shipping) for ~15$ shipped.  It comes with a 3A power supply and can be found here: http://www.amazon.com/gp/product/B00BGT3JKM/ref=cm_cr_ryp_prd_ttl_sol_4

I have been running 5 units on it for 3 hours without any issues.  It should be able to run 6 units (it has 3A PSU) I think but I didn't want to push it.  The only thing about it is that it is horizontal orientation by default (and thin close to surface) so you will either want to elevate it or mount it vertically.

Also, I bought the RHB-500 from newegg (while it was on sale) for about 20$.  I am running 7 units with a USB fan on it and it is going great.

Are you using http://dx.com/p/42838 ?  Mine just came today and it's not a bad little hub.  I opened it up as much as I could without breaking anything and it looks like the power plug is through hole soldered so should not require a reflow machine to replace that crappy little socket with a wire.

The power plug is the same size as a dlink dhub8 and not 5.5x2.5 like I was hoping.  My raspberry pi saw it just fine so I moved 4 erupters from a dlink along with the dlink power supply to it and they are mining away happily.  I am not sure I would want to try to push 5 amps through that little plug so a hardwire might be in order if I keep using it.

I also picked up http://dx.com/p/230094 on a whim and to my surprise it is NOT three x 4 port IC's but one "Terminus Technology Inc. FE 2.1 7-port Hub" cascaded to a "Terminus Technology Inc. 4-Port HUB".

The first one was the expected 3 x "Terminus Technology Inc. 4-Port HUB" configuration.

Finally, that 5v 5a supply referenced by several people earlier in this thread and listed in the OP arrived last week.  It comes with a 5.5x2.5 plug plus an adapter to get it to 5.5xsomething smaller.  I gotta admit, it doesn't look like a 5a supply.  It is half the volume and weight of a UL rated 5v 4a supply.  I don't think I am going to use it on anything and sure don't expect 5 amps out of it.  Be careful out there if you running unattended equipment and stick to UL rated supplies.  I am not saying that the unrated made in china supply that is half as big as it needs to be will catch fire and burn your house down but I wouldn't be surprised if it did.

The question is: for how long?

With 9, I can run the setup stable 24 h/ 7 for weeks. As soon as I add the 10th eruptor, it will work fine but it won't last more than 24 hours before I get a couples of BEs with the green light stuck....

I suspect that we are stressing these more than the average user. I'll bet the designers never anticipated these running 24/7 drawing full current.

today i got 11 new erupters, and i'm waiting on hubs.  Bleh.

man, i can't catch a break with Hubs. today i had an Anker die which takes 9 USBs off line. It has no power. If i push the button on the end (10 port aluminium) the LEDs on the erupters blinks for a second and then nothing. Somebody needs to design a heavy duty hub.