I saw that before, and I see that now:
when I submit the new site map and then do the "resubmit", the numbers of URLs submitted not the same with URLs in web index...
it is saying to me that some pages are not visible to robots and don't recognized by crawler... or it's something else and I have to do some action to make them equal (for ex., try to find what page is not in a web index and why?)
Actually no idea where to start...
Maybe it's something popular and it possible to fix
ps site is great, easy and comfortable to generate the site map with (doantions sent out:)