gethashespersec is 0 so bitcoin-qt doesn't mine

I've tryed to solo 1 KnC Jupiter with bitcoin-qt.

1.bitcoin.conf
listen=1
gen=0
rpcallowip=192.168.0.100
rpcuser=username
rpcpassword=password
server=1
daemon=1

2.Restarted bitcoin-qt
3.In KncMiner mining tab set as pool 192.168.0.102:8332, username and password from bitcoin.conf
4.Restarted CGMiner in KnCMiner Mining tab

5.Result in KnC Miner web GUI:
CGMiner Status - Running (pid=xxxx)
Last Checked - Wed Nov 27 15:56:11 UTC 2013
Avg. Hash Rate - 315 Gh/s
WU - 4658
Difficulty Accepted - 0

6.Result in bitcoin-qt:
gethashespersec is 0

How can I solve this?

How many Mb can the server with 8,6 Th/s download/upload per 24 hours?

How to be sure Bitcoin-Qt works in normal mining mode (before I find first block)?

Thanks for your answers ))
Now I can compare BFL and KnC.
KnC Jupiters work from 510 Gh/s till 820 Gh/s.
BFL Singles work about 90-100% of its capacity.
But BFL MiniRigs usually work 40-60% of it's capacity. I don't know is it BFL low quality product or Netsolus-EclipseMC bad performance.
I'm very upset of BFL MiniRigs!

I'm going to use this manual for Solo mining with KnCMiner:
1.On Ubuntu modify local (appdata) bitcoin.conf:

listen=1
gen=0
rpcallowip=192.168.1.xxx (the ip had to be the ip of your miner, it allows it to connect to bitcoin-qt)
rpcuser=yourusername (used for the mining tab)
rpcpassword=yourpw (used for the mining tab)
server=1
daemon=1

2.Ensure that my firewall does not block bitcoin-qt
3.Restart bitcoin-qt
4.In KncMiner mining tab set as pool 192.168.1.xxx:8332, user and password whatever you have in bitcoin.conf
5.Restart CGMiner in KnCMiner Mining tab (web GUI)

Bitcoin-qt had to run to connect the miner with the network

Hope this is right manual

Frankly to say if I had second chance I wouldn't buy miners at all (especially from BFL). But now I have at least to reduce my loss.

What is preferable configuration for the server to conduct such task?

Now I'm using EclipseMC and KnC mining pools. One day brings me about 6 bitcoins. But to have any chance to bring bitcoins I paid for all this equipment back I need to try Solo.

Hello,
I'm going to use 8,6 Th/s in Solo mode.
12 BFL MiniRigs 500 Gh + 12 BFL Singles 50 Gh + 4 KnC Jupiters 500 Gh are at EclipseMC and KnC mining pools now.
1.How much traffic capacity do I need for effective mining?
2.What is preferable configuration for the server to conduct such task?
3.How to be sure Bitcoin-Qt works in normal mining mode (before I find first block)?
4.How many Mb can the server with 8,6 Th/s download/upload per 24 hours?

baB1Rzmu6DBc7eDEtrJaAJwXJnHY3SYe1S

WHERE ARE NO GIVEAWAYS FOR NEWBIES HERE 

thanks for the information!

do you think they are honest?

agree 100% 

what is better to mine or to buy?

we need to spend 4 hours here somehow )))