I mining zetacoins solo and after Christmas all my blocks are rejected by the network...
Any one know what is wrong ?

best regards,

https://blockchain.info/address/36PrZ1KHYMpqSyAQXSG8VwbUiq2EogxLo2

Until now they have over 10000 BTC. Is somewhere any information about how they intend to spend these money?

Currently, the highest achieved difficulty has block 266381:

https://blockchain.info/block/000000000000000000028c32e6952731326747bae4be8db0f832d6eea0362050

Achieved difficulty: 110,484,089,548,580

Ok, I scan the blockchain in python and calculated the achieved difficulty for each block.

If anyone is interested I can put the data here.

Interesting thing is that the block 0 (genesis block) have achieved difficulty equal to 2536.

I am interested what best shares value you find on particular mining rig.
For example, on my 5xUSB Block Erupter (1.66 GH/s) I found 5 M by about three months of mining.
Screen: http://i62.tinypic.com/og9e7c.jpg

So, show us your luck!;)