Originally Posted by
GourmetFlyer
I have been upgraded while waitlisted enough times to be convinced that when PZ spaces is released -- at some point in time -- the waitlist does get processed.
I still believe that in most cases, those on the top of the waitlist get assigned the upgrades instantly. It appears to me that what you described are exceptions and not the norm, that in some instances, due to some technical glitches, that there is a lag between the time when PZ space is released and when the waitlist is processed.
The waitlist does, at some point, get processed; no one doubts that. When it is processed, it usually does process in order. Going out of order, when processed by the automation, is indeed an exception, not the norm.
However, the waitlist does not get processed instantly. Sometimes it is quite quick (<1h), but sometimes it is not. It's not rare that it's not. Whilst you may not have noticed that occurring, I and many others have (again, refer to that thread).