I am trying to get the gmail rss feed to work (my place of business blocks all webmail access, but not RSS access... Ah-ha!), however it seems to not update. I am using Thunderbird as my rss reader of choice, and when I add the feed, it reads the first message, and then stops forever. I have to delete the feed, and then add it back to get it to advance, and even then it only reads the most recent mail.

I can view my feed as a regular xml document and all seems well. Are there issues with the feed that I don't know about?