Litecoin: found blocks but they are not in my wallet!

Hallo,

I'm new to this board and I have a problem solo mining litecoins.
cgminer tells me that I have found a block several times but it's not shown in my wallet.
http://s14.directupload.net/images/131209/temp/r2qg9fcy.png
(I think the error message you are seeing in this picture "WARNING: Number of OpenCL and ADL devices did not match!" occurs when I'm starting cgminer in a RDP-Session.)

I installed Litecoin and cgminer on my mining rig. The Litecoin wallet is updated and I have configured it to act as a server using the following config:

Code:

rpcuser=user
rpcpassword=pass
rpcallowip=192.168.*.*
rpcport=9332
daemon=1
server=1
gen=0

block_nTime=1317972665
block_nNonce=2084524493

I'm using cgminer 3.7.0 with the following arguments:

Quote

cgminer.exe --scrypt -o 192.168.1.4:9332 -u user -p pass --gpu-memclock 1200 -w 256 -v 1 -I 20 -g 1 -l 1 -T --thread-concurrency 15508

My mining rig has two AMD Radeon HD 7870.
The driver version is 13.101.0.0 of June 4th 2013.

What am I doing wrong?

Thank you!

//edit:
I posted this in litecointalk as I think that should be the right forum for this.