I just realized that there are two empty rows of text above all my WP feeds (rss2, rss, atom, comment feed), which does not validate or appear normally in any feedreader.
http://mtsix.com/feed/ (I'm using WP 2.0.1)
I searched around and saw that disabling plugins might work since I could find out which plugin has an empty row below the code. I tried it and it doesn't work.
I even tried ob_start the page and deleting the first two characters with substr. Unfortunately this did not work either - it only took away the <? of the feed.
What could be causing this? I have not checked my feed since I updated to WP2.0 and don't know since I did a lot of things.
Any advice would be appreciated.