Thank you guys for answering. I just got a little parnoid for a few hours!
First of all: bitcoinqt on mac, latest version did show 14.xx BTC after sending 2 BTC during synch. and quit of bitcoinqt as available BTC amount on the main screen.
There was no transaction in the wallet confirming this amount. I was able to do transactions and sending this 14.xxx BTC which is probably the double amount of what should be there. But now, after reading your feedbacks it may be that the software just used an 'hidden' internal adress!

I speak portugees fluent but the comment on the mentioned transactions was (for a short time, probably until next start) just some slang...

To make things short: I'll do this commandline stuff as I'm now pretty shure things didn't went wrong. My local wallet just got mixed up, however its obvious that I need to read a few pages about bitcoins, wallets and blockchain this weekend!

I understand that bitcoinqt-software does not loose/spend by error any btc upon bad user interaction.

So again, thanks!

Hi

I'm a bloody newbie (damm! didn't prepare myselfe enough!!!).

I made some transaktion in the past with my Bitcoinqt wallet with success.
24th of June I've made at transfer of 2.0 BTC during synchronisation of the wallet.
This 2 btc never arrived and the status in my wallet is set to '?'.

Than after a day or so I've noticed that my wallet (still out of synch) showed a saldo of 14.xxx BTC which never could be true as I only transfered 10 BTC to the wallet. Starting wondering about this I started to try to spend this amount.

-I'm so shure that I did use the correct adress as destination. Suddenly when I finished the transaction (Yes I was successfull doing so) the transaction showed up in the history with an wrong adress I never used and do not know about.
Here the address:1tUEh3HRL99EEVukAE6ri5q1prgddEkd2

How something like this could happen? Anybody knows this behavior?

Checking the status of the transcation by dopple click on them there was an never seen message (my wallet is configured to use portugees so I can't read everything!) like '0/not confirmed and something like ...don't foule...'
Now after restarting the wallet this message changed to the normal '0/not confirmed'.

Looking at blockchain.info I'm not able to really understand BTC transactions. Now my local wallet is in synch and shows more or less 0.0 BTC

As I'm just such a dump not understanding the blockchain I'm afraid I've lost all my BTCs but there should be around 7 BTC left.

-Anybody can tell me what happen? Is it possible that my local blockchain data got corupted without bitcoinqt realising?
How do I recover?
-I allways was thinking I could send BTC's during local blockchain synchcronisation. Is this true?
-Anybody just could calm me down in order to check the blockchain and tell me how many btc blockchain.info shows for my wallet?
adress: 1P6gPKQq5ipMGs4UsZ1e4UPwoYRzKwP9kF

have I really lost my btc's or is it that I've to kill the local blockchain and synchronising again?

Thanks for help!