Just checked my Windows wallet, mining with GPU and got a message "Not enough memory" (got 8GB) and when restarting the wallet I get message "error reading block" and the wallet doesn't start... any ideas what the problem could be and  how to resolve it?

New version, the only change is a new logo:
Windows wallet (32-bit)
Windows wallet (64-bit)
Linux wallet (32-bit)
Linux wallet (64-bit)
Mac OS X wallet

There is nowhere to cheat yet, existing miners can only work in solo mode. First we'll need at least some pool protocol.

Due to more decentralized nature it is harder to perform such analysis for SpreadCoin. You need to monitor which node will be the first to broadcast the block. For Bitcoin you can just connect to all major pools which is not a problem as they probably are running on a good servers. Since there are no pools in SpreadCoin you will need to connect to as many nodes as you can and still the fact that some node was the first to broadcast some block doesn't mean that this block was mined by this node, it may be just distributing block which was mined by node to which you are not connected. Many computers in internet are behind NAT or don't accept incoming connections for some other reasons, the only way to be connected to such nodes is if they will connect to you which may never happen.
This doesn't mean that it is impossible but hashrate distribution analysis may be less reliable than in cryptocurrencies with pools.
No such analysis is available yet.

Yes, of course, will do it when I will come back home to my main PC.

Links to exchanges in the OP. Number of coins is at the block explorer:http://spreadcoin.net/explorer/

it's quite normal,0.14/440=0.032%,that's is your odd of finding blocks.

not sure what got out of memory... restarted with -reindex and back in business

girinos miner crashes. does this happen to anyone else?

Mr Spread.  Any thoughts on forking in Darkcoin features into this coin?  "True Decentralization", anonymous, and masternodes would be pretty amazing.