yes that site kind of sucks.. wish he made a support thread here...
these things are VERY picky on what type of usb they are plugged into.
im running 7 @ 240 off of 2 superbpag usb hubs, plugged into an old usb 2.0 cyberpower hub.. as they would not work directly plugged into the pc usb ports..
its fairly stable.. i get a dropout every couple days.. 1 or 2 just stop sending in shares.. you have to unplug everything and restart bfgminer to get them to work again.
i also got 2 bad sticks, that even at .9v still give me .5% or more hwe @ 240.. and wont run at 256 :/ 100% hwe..
it would help if you listed what hub you have.