mirror.ets.kth.se should be taken out of the list of mirrors; it seems completely broken at the moment (almost everything 404s). $ curl -I http://ppa2.quickbuild.pearsoncomputing.net/redirect.php?file=trinity-builddeps-v3.5.13/ HTTP/1.1 301 Moved Permanently Location: http://mirror.ets.kth.se/trinity/trinity-builddeps-v3.5.13/ $ curl -I http://mirror.ets.kth.se/trinity/trinity-builddeps-v3.5.13/ HTTP/1.1 404 file does not exist Server: publicfile Date: Tue, 27 Dec 2011 11:32:37 GMT Content-Length: 47 Connection: close Content-Type: text/html