I'm using the standard Bitcoin Core 0.9.2.1.
I had a strong password on there. Then I decided to move Bitcoin off my SSD onto my Drobo. I couldn't get it to work so I ended up downloading the entire blockchain, with my original wallet.dat
After the blockchain was up to date, I went to check my password and there was no password set!
How could this have happened?
Just so I understand what happened:
You had walletA (encrypted) on computer A and copied that with the blockchain and all other data on computer B.
Now you have an exact copy of walletA on computer B, but its not encrypted?
Are you sure its the same wallet? Maybe bitcoin core made a new wallet. Are the addresses the same, does your TX history still show? Are the notes to the addresses still there?