Hi, I've have noticed same problem that Apper does not show changelogs.
Using Wireshark I have captured how apper tries to download them: 10 12.078138000 192.168.1.10 5.153.231.3 HTTP 251 GET /changelogs/pool/main/d/dbus/dbus_1.6.8-1+deb7u5/changelog HTTP/1.1 12 12.408626000 5.153.231.3 192.168.1.10 HTTP 731 HTTP/1.1 302 Found (text/html) 26 12.580726000 192.168.1.10 185.31.17.185 HTTP 241 GET /changelogs/main/d/dbus/dbus_1.6.8-1+deb7u5_changelog HTTP/1.1 28 12.620358000 185.31.17.185 192.168.1.10 HTTP 900 HTTP/1.1 301 Moved Permanently (text/html) 37 12.745062000 192.168.1.10 185.31.17.185 HTTP 241 GET /changelogs/main/d/dbus/dbus_1.6.8-1+deb7u5_changelog HTTP/1.1 39 12.785557000 185.31.17.185 192.168.1.10 HTTP 742 HTTP/1.1 404 Not Found (text/html) So in the end, it's 404. I Hope this helps.
