My M8 was shipped out to NJ around the second week of January too. It's been a while, so I emailed the repair contact at Allendale (follow the support links) and he gave me a tracking #. For some reason, Leica chose not to give out the tracking # when they sent the letter saying it would be sent to Germany.
In fact, the letter stated my repair would take 4-5 weeks.
Disappointing, to say the least. Anyway, I checked with the web site and it states that just yesterday it was approved for return. So far, no word on whether it is back yet, or when it goes out.
The Leica repair contact was helpful by providing that tracking #. However, I get the feeling that Leica Germany doesn't really understand what they are doing when they take 4-5 weeks to repair something like this.
Anyway, I can't wait to get the M8 back, so that I can finally use it in low light. If the problems were minimal I wouldn't have returned it, but not having low light without streaking would make the camera unusable for much of what I shoot.
Ken