thanks for the quick response, pretty gutted, i can follow the transaction but don't really know how this were able to do this
Possibilities:
* wallet not encrypted
* key logger on your system
* wallet encrypted with very easy to crack password
* wallet-stealing malware on your system
* wallet stored in publicly accessible location
* RPC ports open to your Bitcoin client
* no RPC password or very weak one
* allow any IP to connect via RPC
Sorry for your loss.