sorry, i screwed up the rss feed upgrading anatone.net from visual studio 2003 (.net 1.1) to visual studio 2005 (.net 2.0)
i don't know the how or the why but i'll get it fixed soon.
[update: turns out "the why" is that the entire feed is being output twice]
[resolution: the feed was being output twice due to the autoeventwireup page attribute not being explicitly set to false]