For some obscure reason feed parsing in WP using SimplePie always fails. I have no clue what's causing that. The RSS widgets print this error message:
An error has occurred; the feed is probably down. Try again later.
But the feed is up and healthy.
Recently our server was upgraded from PHP 4 to PHP 5, Apache 1.2 to Apache 2 and a number of other software packages. That error started occurring after the upgrade. But yet again I'm clueless as to what's causing it. Anybody got an idea?