I clicked on “Distribute Dividends” in the Nu Client and your address was in the list, but one thing I noticed was that the “Record date (local time)” field shows 11/22/2014 12:00:00 AM by default when it is currently 11/22/2014 9:52 AM. So that may explain a large gap of hours in the time frame for releasing dividends. Personally, I think 36 hours of ownership is far too small of a window for earning dividends. The network requires about a week before one could start start minting by stake. That sounds like a good window for dividends also if you ask me.
I agree with you that might be the origin of the problem.
I guess this is a discussion the community should have.