Ethereum Wallet Account gives Wrong Password message but password never changed Please HELP

[Sazon85]

node: geth
wallet: 074-075
OS: Win 7, 64bit
Mainnet

Hello all, on top of the DAO breakdown I am unable to use my Ethereum Wallet Account.
I used Ethereum wallet version .7.4 on win 64 in May for the first time to buy into the DAO
I used a copy of my crowdsale ethereum json file to import my account on my lenovo laptop, home wifi network.

On May 12 I did my last transaction with my INITIAL password. All transactions went through and I had about 300k DAOs.

I did not log into my wallet since then until now when I decided to dump the DAOs. After opening the account I noticed about 10 unrecognized transactions Starting on May 31 in the latest transaction list. I am attaching the screen caps here. My account Balances have NOT changed.

Now whenever I try to send a transaction I get " wrong password" message.
I did not change my password since I bought DAOs on May 12th. My password is written on a paper that is stored in a safe and only I have access to the safe.

Can someone please take a look if they see anything they can recognize as being a hack or point me in the right direction.

I tried downloading ethereum .7.5. but the same exact issue

My wallet address

0xf476e1267f86247cc908816f2e7ad5388c952db0

https://etherscan.io/address/0xf476e1267f86247cc908816f2e7ad5388c952db0

[luclu]

The transactions are just due to the event-logging of "The DAO" contract. In version 0.7.5 you can deactivate those on per contract base. (#781)

Please make sure that you don't have multiple copies of the same keyfile in the keystore-folder. See the related Bug-report: #780

Also please follow those recommendations: #669

[luclu]

Could you please give the geth account update command a try?
This might be helpful as this post suggests.