Just picked up a 3G S and could post photos to my MobileMe albums but received a "could not publish" error every time I attempted to upload a video.. I found that the MobileMe album I was attempting to upload to was set to "Syncs with" Aperture rather than iphoto. Once I set it to iphoto my videos uploaded from the iPhone without any problems. Just thought I'd post something since the MobileMe support folks didn't have a clue. Regards.