OK... thanks. I guess I didnt do anything weird then...
I even made sure to hand tighten the lockring on there (at first) to avoid cross threading...
Tighened the lockring (with a proper lockring tool) a a couple of times on the first ride. I ride in the city so I stop / skip / skid / backpedal ALOT, and if anything was loose I would have noticed and tightened it up.

Unfortunately, I just took the cog off and had a look... Its definately the lockring threads ON THE HUB that are stripped. The threads on the lockring itself are fine. Goddamnit.

What are they gonna say down at BikeWorks?
The hub should be stronger than this right?
Like I said before, the thing is only like 5/6 weeks old!

AAAARRRGGHH!
Thanks again for the help / answers
-Jake