My feeds (RSS2, RSS, Atom) do not validate because there are two extra blank lines on top of the feed content, which no feed reader accepts as a valid feed.

Can you help me out? The feed is generated by WordPress 2.0.1. I disabled all plugins and it’s still the same. I even tried to buffer the feed output with PHP, and getting rid of the two lines with substr, but it only got rid of the <?.

There must be some code that’s generating blank lines — What could be the problem?

Update! I Fixed it. It turns out that it was Mint’s auto.php that was creating the extra lines. It took me 2 WordPress upgrades, 2 complete database comparisons, and a fresh install one WordPress to find out what’s really wrong. And it was that fresh install that I realized it was Mint that had to be it.

So I guess since I started using the Mint’s auto feature (3-4 months ago?), the feed stopped working, for some feed readers anyway. But now it is, finally!