Here's proof otherwise:http://photobyviggo.com/random/pw2.jpghttp://photobyviggo.com/random/PW1.jpg
These two (and the 40 other shots) are at the same manual power setting. The only difference is speed. I had the curtain showing from 1/3200s through 1/6000s, then at 1/8000s the suddenly worked. And from 1/1000s and up to 1/3200s I had no power. This was completely consistent for this day, yet , other days showed other symptoms.
After the guys over at PW customer support saw these (and my other examples and mails) they said "So sorry we can't fix this for you, please return your radio's for a full refund"
Another time I had ONE setting with the AC3 giving me consistent no power, and they said "wow, that's a strange one, never seen that". Which is the problem, the errors are never the same so it's extremely hard to figure out, other than replacing radio's and flashes.. oh yeah, I did that, nothing helped....
Here's an example of that error, and this kept showing with 100% of the shots that day.http://photobyviggo.com/random/pocketwizard.jpg