I experience a very slow connection to bugs.kde.org. Inspection of the connection reveals it is using IPv6. Some time ago, maybe with a different organization, this type of slow connection was caused by improper configuration of IPv6 on the server, so this may be the cause.
I tried the link on the web page to the sysman of the website, but was asked for an ldap user id and password. -- fr.gr. vertaler van KDE Freek de Kruijf