is your wallet properly synced?  Try setting up a conf file with the details from the OP.  The extra nodes can help you stay up to date.  If you're still having problems, try mining on a pool.  I've been mining with about 11 mh/s solo for about a day now and haven't even found a single block.  Pretty bad luck on my part but if I don't find any for the next day, I'll just go back to pool myself.