Hi, "ftp://planetmirror.com/" no longer works - it must be "ftp://ftp.planetmirror.com/". There's one instance of this in thirdpartymirrors, in the line for openoffice, which needs "ftp." adding.
Created attachment 95253 [details, diff] thirdpartymirrors.patch Horrible-looking patch to add "ftp." to one planetmirror URL.
Yep, that's true, so I've gone ahead and fixed it, thank for reporting