Can anyone shine a light on how this happened??? I had a decent password to my understanding (~15 characters with numbers and symbols).

I've never had an issue and suddenly an hour ago my coins got withdrawed on six seperate transactions to the same address until they finally were all depleted..

heres a screenshot

http://i.imgur.com/LWXNChd.png

Im a noob so don't understand why the make it so complicated to post an image..

The coins were all sent to this address: 17avcFVaa9dWNXiEx9ALChvN77py9dmHwC