I have heard the spokes of the right rear wheel do fail for others, I am not sure of the nature of the problem.
The young man who assembled my bike is very experienced, we had a chance to talk and he knows quite a bit. There are customers (and I was one of them) who wait to have him do the assembly instead of others. I had to wait a few days extra for his service.
In any case, the warranty fully covered the issue, Pacific Cycle was quick to honor the warranty and their customer service people are very nice, my new wheel should be here Tuesday.