Can anyone explain what would happen if I created a wallet in 2010 and someone sent coins to the wallet address, gave me a tx number that I stuck in and hit receive, shut the wallet down and left Bitcoin demon running ( It probably didn't sync with the network) and went to work. When I got home the power had been off and the computer was off, I never had it back online since then.  I looked on the block chain at old addresses and don't see that amount around the time it happened.