I've got a brand new install of WPMU on a server here with no plugins or any data to speak of. When I go to the dashboard home page I'm getting the "WP HTTP Error: Couldn't resolve host" in the wordpress.org RSS feeds section. I can't add rss feeds in the sidebar widget either. nslookup, ping, and dig all work fine from that server. Additionally, when I went to install the buddypress plugin by searching for it in the plugin installer in the wp-admin area I got this error: "An Unexpected HTTP Error occurred during the API request." The section called "Popular tags" on that page (wp-admin/plugin-install.php) was also empty. Any help would be appreciated.