No problems here??? It's probably your back-up application? Are using by any chance Carbon Copy Cloner? I've done a back-up of my Pages documents and they've all kept their original creation, modification, access and backup dates...So I think the problem lies elsewhere?
 

Do you have to use that many question marks?? Hein?? ;) ... I _know_ that the problem isn't with the format itself and is probably connected to using CCC in some way. However: There are _other_ issues as well. Since the files are actually folders, they don't list their file sizes in Finder's list view, for example. Maybe Apple should use some sort of .zip-compression transparently, so the files _are_ actually files, compressed and uncompressed (or just wrapped) automatically.

I'm not trying to solve this problem now, the modification dates are _gone_ by now. I'm trying to point out some problems with Apple's way of handling folders as files.
 

Sorry, about the question marks! Just trying to help you out dude ;) quote: "they don't list their file sizes in Finder's list view" there we have very a valid point! I hate that I can't view folder sizes in list view. Actually it's not only Pages it goes deeper then that (Keynote, iMovie, iDVD etc.) I think the file format is okay (for Mac platform, not for Mac/PC interchange) but the problem relies within the Finder. It's a mystery for me why we can't view folder sizes in list and column view. My point is: maybe you're header should be Stupid, stupid OS X file formats, or something like that. So maybe if we all complain at Apple (or use a poll?) Apple will fix it :P