I am no sure why, but I am having some feed problems with Google Reader. I have run my feed through a validator and addressed the warnings reported. As near as I can tell, the problem seems to have something to do with the guid element in the feed but I cannot find any duplicate guids that would be causing the problem. As a consequence of my import with a temporary URL, though, I am noticing that most, though not all, of the guids Google Reader is recognizing have the beta site URL in them. The only other item I’ve seen successfully show up in Google Reader doesn’t use the p?=post_id form that the newer, non-showing items use. That was an entry I posted from Flickr that uses the permalink as the guid entry.
Anyone expert with WordPress 2.5.1 and/or Google Reader who can shed some insight?