Its a 990FXA board with a FX-8120, CPU so its not underpowered. And yes, I only minimized it, I did not close and reopen.

I did not create that firmware...

However that looks like a usb connectivity issue which happens quite often on avalon because of the terrible hardware that it's run on (the wrt703n router). If you can connect to it via ethernet and fully disable wifi, you will find it more reliable.

(Remember I'm providing generic support for firmware I did not create though).

Nope.

I really did say that coz it is correct ...

I added "Last Valid Work" to cgminer coz it is the best way to determine something is wrong.

It has nothing to do with shares or difficulty.

It is the last time a valid hash was returned by the device.

Tested and it doesn't work for solo mining. I calculated "timeout" from devs data, like
devs.STATUS.When-devs.DEVS(x).Last Valid Work; I see that timeout can be high even for healthy card...

I'm sure this was answered but can't find it using search and reading all is out of the question...

Jalapeno

 [2013-08-02 09:57:22] USB init, open device failed, err -12, you need to install a WinUSB driver for - BFL device 7:2

I'm googling and the only solution that work was use BFGminer... Now I'm sure it is possible to use cgminer but have no idea how... Where do I get that driver?

I found one on net but didn't work... And according to Jalapeno how-to it should be plug and play...

PWC solo & 5750 (about 80 kHash), Last Valid Work is 1751 seconds old just now and still growing. I already noticed that this value was higher than 2000 seconds. On the other side, faster card (7950) and different scrypt coin has lower values but I see 244 seconds timeout just now... These values are related to coin and GPU hashrate.

Doesn't seem too difficult to me.  Could be worded better I guess

-----------------------ASIC Readme-------------------------
WINDOWS:

On windows, the direct USB support requires the installation of a WinUSB
driver (NOT the ftdi_sio driver), and attach it to the Butterfly labs device.
The easiest way to do this is to use the zadig utility which will install the
drivers for you and then once you plug in your device you can choose the
"list all devices" from the "option" menu and you should be able to see the
device as something like: "BitFORCE SHA256 SC". Choose the install or replace
driver option and select WinUSB. You can either google for zadig or download
it from the cgminer directoy in the DOWNLOADS link above.
-------------------------------------------------------------

Here is my interpretation of the above paragraph and the steps I took

1. Unplug all Erupters
2. Run Zadig - Install WinUSB (I may have rebooted, can't remember for sure) - I could not install WinUSB while Erupters were plugged in.
3. Plug in one Erupter, verify that it is set to WinUSB.  If not set it to WinUSB.
4. Close Zadig, plug in the rest of the Erupters, run CGMiner.
Done

It is obvious to you I guess but not to me... To me this looks like sjldjlashfioedclas slojndalen siposajkdakl sjkdsjowm

And it is the last version so this is what you get out...

And it might be in README but it is not in English that I understand... The only thing that I find it that you need to run it as admin and I did...

EDIT: This is the part I should be reading right in ASIC readme?

WINDOWS:

On windows, the direct USB support requires the installation of a WinUSB
driver (NOT the ftdi_sio driver), and attach it to the Butterfly labs device.
The easiest way to do this is to use the zadig utility which will install the
drivers for you and then once you plug in your device you can choose the
"list all devices" from the "option" menu and you should be able to see the
device as something like: "BitFORCE SHA256 SC". Choose the install or replace
driver option and select WinUSB. You can either google for zadig or download
it from the cgminer directory in the DOWNLOADS link above.

When you first switch a device over to WinUSB with zadig and it shows that
correctly on the left of the zadig window, but it still gives permission
errors, you may need to unplug the USB miner and then plug it back in

And this in FPGA...

When mining on windows, the driver being used will determine if mining will work.

If the driver doesn't allow mining, you will get a "USB init," error message
i.e. one of:
 open device failed, err %d, you need to install a Windows USB driver for the device
or
 claim interface %d failed, err %d

The best solution for this is to use a tool called Zadig to set the driver:
 http://sourceforge.net/projects/libwdi/files/zadig/

This allows you set the driver for the device to be WinUSB which is usually
required to make it work if you're having problems

With Zadig, you may need to run it as administrator and if your device is
plugged in but you cannot see it, use the Menu: Options -> List All Devices

You must also make sure you are using the latest libusb-1.0.dll supplied
with cgminer (not the libusbx version)

When you first switch a device over to WinUSB with Zadig and it shows that
correctly on the left of the Zadig window, but it still gives permission
errors, you may need to unplug the USB miner and then plug it back in

Doesn't work or I don't understand it... But after doing that BFGminer stop working...

Tell you what - since you clearly can't understand what is written in the README, come visit IRC, send me 1 BTC and I'll help you.
Wasting space in here repeating what's in the READMEs is ... a waste of space.
A lot of effort has gone into the READMEs by ckolivas and myself and I wrote all the original version of the USB code and README for USB so I've no idea what's difficult about it for anyone who knows a bit about using a computer.
Since it will obviously take some time to tell you all the keys to press - come to IRC (in my sig)