I apologise if this has been posted, I have read most of this post but not all of it.
I found this forum after upgrading to the new iPad from the iPad 2 for the new screen only. I am a professional photographer and this essential for me. I too found my photos scrambled!! After a few days of stressing, and apologising to a client on Saturday when I showed them my portfolio on a sluggish iPhoto, just to get the photos in order.
I then made a slideshow using slideshow+HD, which is great BTW, and then found my photos out of order in iPhoto! very frustrating.
I have however found a very simple way to order the photos on iOS5. The ordering is name order, but alphabetical! If the files are numbered liek this: photo-1, photo-2 etc. Then the 10th photo will appear after photo-1. ie. photo-1, photo-10, as this is alphabetical. To solve this, change your file names so they have the same number of place values in place, ie, photo-001, photo-002. Your file names will then be in alphabetical order, and will appear in order on the photos app on your iOS5 iPad.
From now on all my photos are going to be exported from lightroom with this numbering system to save me manually changing the first 100 photos for each of my files. Good job i have no folders that go over 1000 pics!
i hope this works for you all.
David Stubbs
www.davidstubbsphotography.com