There's a thread started some time ago listing the times forummers have been upgraded, or even "witnessed" op-upgrades in progress. Suffice to say, the thread isn't very long!

As PPS, I've only been upgraded once or twice. Then again, I fly mostly J so I don't really have many opportunities for upgrades. When I fly Y it's usually the SIN-KUL route which is chock full of Solitaires anyway.