I figured an update was appropriate at this time. I had experienced some issues with inoperative or malfunctioning bike docks either upon check out or return. They seem to have figured out their problems and the experience has been relatively trouble free this week.
There was a news story about how lack of light to recharge the batteries was causing issues for certain docking stations due to location or weather and how they were addressing the problem in the short term by swapping out the batteries with fully charged ones.
Hopefully that was all there was to the issues and going forward they will either upgrade the solar collector and/or battery for the docking stations that were experiencing these issues.
I'm very happy with the program so far - trading a subway ride for a bike ride has done wonders for my energy levels at work.