I have 3 feeds merged into one: http://feeds.feedburner.com/allasportbloggar

I'm using simplepie to merge the 3 feeds and then send it to feedurner.

I'm using this on the bottom left of this site: http://www.sportbloggar.nu (and 3 others).

Since my upgrade to wp 3.1 the feed has not been displaying. I know my simplepie output is not perfect but feedburner should be cleaning it up and I think the problem may be with wordpress.

Any ideas?