It only seems to be a problem for changelog/copyright files in the development version (Lucid at this moment), please fix missing files.
As mentioned by the bug reporter a link to the lauchpad changelog for packages in the development version could also be a solution for missing changelogs.
I can confirm this problem for openoffice.org (http:// packages. ubuntu. com/lucid/ openoffice. org) and zekr (http:// packages. ubuntu. com/lucid/ zekr) package:
http:// changelogs. ubuntu. com/changelogs/ pool/main/ o/openoffice. org/openoffice. org_3.2. 0-4ubuntu3/ changelog and http:// changelogs. ubuntu. com/changelogs/ pool/main/ o/openoffice. org/openoffice. org_3.2. 0-4ubuntu3/ copyright are missing.
http:// changelogs. ubuntu. com/changelogs/ pool/multiverse /z/zekr/ zekr_0. 7.5~beta3+ repack- 1ubuntu1/ changelog is missing.
It only seems to be a problem for changelog/copyright files in the development version (Lucid at this moment), please fix missing files.
As mentioned by the bug reporter a link to the lauchpad changelog for packages in the development version could also be a solution for missing changelogs.