QT issue, adding up < what blockcahin shows and what on what address?

[jubalix]

So I have checked 4 of my addresses in the QT on blockchain and they all add up to X BTC

however the QT show a number Y which is less than X

I have used the console commands to get balance on each and it shows 0.00 on each address.

I have checked and I can dump all the relevant private keys.

any hints as to what could be going on, or how to investigate further, in the QT only as I do not want to import priv keys to online or other wallet

I am fully sync'd