As of 11:30pm CDT it looks like at least 3 people from MR and 2 from KBoards have units with pin holes. Also 2 people on MR and 1 on KBoards have light leaks they describe as 1/4" to 1/2" blobs of light or a streak of light. I guess 8 units doesn't sound too bad at first, but when you consider the small number of people who have posted about their PW2s (perhaps 50 people), then it starts to look like a big issue.

And this
MR thread shows a totally screwed up PW2 light system.