I concur... Today my update-manager (version 0.42.2ubuntu22 on Dapper) shows 23 updates available. None of them has a changelog displayed. The "Change" field briefly displays "Downloading the list of changes..." and then stays blank when clicking on each update.
The incriminated packages are: dpkg dpkg-dev dselect firefox firefox-dom-inspector firefox-gnome-support hal hal-device-manager info libavahi-client3 libavahi-common-data libavahi-common3 libavahi-glib1 libhal-storage1 libhal1 libnspr4 libnss3 libpng12-0 libpng12-dev mozilla-thunderbird mozilla-thunderbird-inspector mozilla-thunderbird-typeaheadfind texinfo
Aptitude is able to show the changelog for some of them but not all:
I concur... Today my update-manager (version 0.42.2ubuntu22 on Dapper) shows 23 updates available. None of them has a changelog displayed. The "Change" field briefly displays "Downloading the list of changes..." and then stays blank when clicking on each update.
The incriminated packages are: dpkg dpkg-dev dselect firefox firefox- dom-inspector firefox- gnome-support hal hal-device-manager info libavahi-client3 libavahi- common- data libavahi-common3 libavahi-glib1 libhal-storage1 libhal1 libnspr4 libnss3 libpng12-0 libpng12-dev mozilla-thunderbird mozilla- thunderbird- inspector mozilla- thunderbird- typeaheadfind texinfo
Aptitude is able to show the changelog for some of them but not all:
$ aptitude changelog dpkg dpkg-dev dselect firefox firefox- dom-inspector firefox- gnome-support hal hal-device-manager info libavahi-client3 libavahi- common- data libavahi-common3 libavahi-glib1 libhal-storage1 libhal1 libnspr4 libnss3 libpng12-0 libpng12-dev mozilla-thunderbird mozilla- thunderbird- inspector mozilla- thunderbird- typeaheadfind texinfo dom-inspector changelogs. ubuntu. com/changelogs/ pool/universe/ f/firefox/ firefox_ 1.5.dfsg+ 1.5.0.8- 0ubuntu0. 6.06/changelog dom-inspector changelogs. ubuntu. com/changelogs/ pool/main/ f/firefox/ firefox_ 1.5.dfsg+ 1.5.0.8- 0ubuntu0. 6.06/changelog gnome-support changelogs. ubuntu. com/changelogs/ pool/main/ h/hal/hal_ 0.5.7-1ubuntu18 .2/changelog changelogs. ubuntu. com/changelogs/ pool/main/ h/hal/hal_ 0.5.7-1ubuntu18 .2/changelog changelogs. ubuntu. com/changelogs/ pool/main/ t/texinfo/ texinfo_ 4.8-4ubuntu0. 1/changelog changelogs. ubuntu. com/changelogs/ pool/main/ a/avahi/ avahi_0. 6.10-0ubuntu3. 2/changelog changelogs. ubuntu. com/changelogs/ pool/main/ a/avahi/ avahi_0. 6.10-0ubuntu3. 2/changelog common- data changelogs. ubuntu. com/changelogs/ pool/main/ a/avahi/ avahi_0. 6.10-0ubuntu3. 2/changelog changelogs. ubuntu. com/changelogs/ pool/main/ a/avahi/ avahi_0. 6.10-0ubuntu3. 2/changelog changelogs. ubuntu. com/changelogs/ pool/main/ h/hal/hal_ 0.5.7-1ubuntu18 .2/changelog changelogs. ubuntu. com/changelogs/ pool/main/ h/hal/hal_ 0.5.7-1ubuntu18 .2/changelog changelogs. ubuntu. com/changelogs/ pool/main/ f/firefox/ firefox_ 1.firefox1. 5.dfsg+ 1.5.0.8- 0ubuntu0. 6.06/changelog changelogs. ubuntu. com/changelogs/ pool/main/ f/firefox/ firefox_ 1.firefox1. 5.dfsg+ 1.5.0.8- 0ubuntu0. 6.06/changelog changelogs. ubuntu. com/changelogs/ pool/main/ libp/libpng/ libpng_ 1.2.8rel- 5ubuntu0. 1/changelog changelogs. ubuntu. com/changelogs/ pool/main/ libp/libpng/ libpng_ 1.2.8rel- 5ubuntu0. 1/changelog changelogs. ubuntu. com/changelogs/ pool/main/ m/mozilla- thunderbird/ mozilla- thunderbird_ 1.5.0.8- 0ubuntu0. 6.06/changelog changelogs. ubuntu. com/changelogs/ pool/main/ m/mozilla- thunderbird/ mozilla- thunderbird_ 1.5.0.8- 0ubuntu0. 6.06/changelog thunderbird- inspector changelogs. ubuntu. com/changelogs/ pool/main/ m/mozilla- thunderbird/ mozilla- thunderbird_ 1.5.0.8- 0ubuntu0. 6.06/changelog thunderbird- typeaheadfind changelogs. ubuntu. com/changelogs/ pool/main/ t/texinfo/ texinfo_ 4.8-4ubuntu0. 1/changelog
Get:1 ChangeLog of dpkg [197kB]
Fetched 197kB in 0s (302kB/s)
Get:1 ChangeLog of dpkg-dev [197kB]
Fetched 197kB in 0s (287kB/s)
Get:1 ChangeLog of dselect [197kB]
Fetched 197kB in 0s (259kB/s)
Get:1 ChangeLog of firefox [128kB]
Fetched 128kB in 0s (254kB/s)
Ign ChangeLog of firefox-
E: Couldn't fetch URL http://
E: Couldn't find a changelog for firefox-
E: Couldn't fetch URL http://
E: Couldn't find a changelog for firefox-
E: Couldn't fetch URL http://
E: Couldn't find a changelog for hal
E: Couldn't fetch URL http://
E: Couldn't find a changelog for hal-device-manager
E: Couldn't fetch URL http://
E: Couldn't find a changelog for info
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libavahi-client3
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libavahi-
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libavahi-common3
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libavahi-glib1
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libhal-storage1
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libhal1
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libnspr4
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libnss3
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libpng12-0
E: Couldn't fetch URL http://
E: Couldn't find a changelog for libpng12-dev
E: Couldn't fetch URL http://
E: Couldn't find a changelog for mozilla-thunderbird
E: Couldn't fetch URL http://
E: Couldn't find a changelog for mozilla-
E: Couldn't fetch URL http://
E: Couldn't find a changelog for mozilla-
E: Couldn't fetch URL http://
E: Couldn't find a changelog for texinfo
And I did wait at least one day before trying to apply those updates.