BTW, not sure if it's a good idea to mix repositories and use the hp mini ones for your Dell since there may be hp mini specific settings/tweaks for hardware that may not be applicable/good for your Dell mini.
I have thought about the implications of using the hpmini repositories, but then again, looking at the addresses, both the dell and the hpmini repo's start with dell-mini.archive.canonical.com/ubuntu/dists/
I looked at the package that shiningkenmonster mentioned, per se:
Old Dell package:
firefox-3.0-gnome-support_3.0.3+build1+nobinonly-0ubuntu0.8.04.1netbook2build1_lpia.deb
from dell-mini.archive.canonical.com/ubuntu/dists/hardy-dell-mini/main/binary-lpia/
as opposed to new hp mini package: firefox-3.0-gnome-support_3.0.4+nobinonly+nb2-0ubuntu0.8.04.1netbook1_lpia.deb
from
dell-mini.archive.canonical.com/ubuntu/dists/hardy-hpmini/main/binary-lpia/
Too bad that I don't have the dell mini to test this out on.
What could be done as a (temporary) fix (until dell+ubuntu may decide to roll out updates once again) is at the very least fix the broken links in sources.list
yakker, do you get the 404 errors too, or are you just not getting the updates?
Switching to the new dell-mini repositories, as mentioned above, is confirmed:
http://ubuntuforums.org/archive/index.php/t-983005.html