hi guys
it looks like i did it too.
i locked up my wallet and i can not remember any characters.
i think that my multibit client (0.5.15) was already locked when i installed it.
now i can not do anything whith my bittcoins.
please any help here?

there are 0.145 bitcoins in the wallet, who ever will help me get the coins will recieve the half of the wallet.
email me here xeiridis@gmail.com
thanks