I have lost a bit more than 0.5 BTC in total.
I had 11 GH/s and had enough to buy another 1.5.
I have sent the files dumped in my TEMP folder to another CEX user, he will pull it apart and help to discover what and how he managed to get it done.
The webpage listed above ran a JAVA plugin, which I stupidly agreed to run.
What got my attention at first was btc-e loaded in another web browser that was closed.
It also ran an app called mtgox_bot.exe.
The Scumbag has managed to get into my account and change my password, I am locked out.
I was able to see my worker on ghash.io with 0 GH/s just before I was locked out of there.
I'm SAD.