I have installed the updates now. No success.
I Switched to USB instead. No success either even if it played ok (2.9 ms on 128). FW had 2.8 ms on 128, so minor improvement in terms of latency. However the pops were fewer with FW. I mostly hear clicks/pops when closing a 3rd party plugins in Sonar X2 Producer. (64 bit) on Windows 8. Perhaps a software problem more than hardware. Well. guess I need to try some more...