I am perplexed. My main websites RSS feed (www.geekazine.com/feed) will show up in a browser in under a second. When I go to validate it at W3C (and other validators), it times out. If I validate any other RSS feed in my multisite (www.ipad-365.com/feed) it says the feed is valid.
So far I
- refreshed my plugins
- turned off and deleted all cache information
- changed my RSS number to 1
- repaired and optimized all tables
- changed the theme to WP2013
What could be causing this?