@ Paul: Not sure as I got mine through another member here who got it from the Aussie reseller, but I think it was one of the later units as it has the updated driver. I really hope they do another run of these crystals.
And sorry kecked, I like lumia too I think I'll hold on to this one at least until I know I can get another!
Yeah, if you didn't pounce on these when they were first revealed, you do run the risk of getting something that was pot modded improperly and is just waiting to fail. I feel for you. You might consider backing the current off of the pump diode a bit and see what you get then. It just MIGHT fall back into place.