No, as I say, you can see the effect here - and on all current version PP sites I have tried.
If you go to a users member gallery here, choosing one with plenty of photos, and just go to the bottom of the page and click on sort without changing anything from the defaults you'll get a different number of photos sorted to the number you were first shown.
To reproduce it this works:
Click on this to go to user WaldoDessa here: http://www.photopost.com/photopost/s...0&ppuser=72459
He has 119 photos the page tells you.
Just go to the bottom of the page and click on sort, that will use Filename, Beginning, Ascending - as they are the defaults there.. and you'll see he now has 117 photos on the results page. ie the top of the page says you are viewing photos 1-12 of 117, and you are, 2 photos have gone from the sort.
To see a much stronger effect you need a site with larger photo counts, as when a user has thousands of photos hundreds seem to vanish when you do any sort of sort.
Thanks for looking at this.