This is in 8.04.1 release, with Firefox 3.0.3. I just confirmed that it still occurs as well.
$ apt-cache policy firefox firefox: Installed: 3.0.3+build1+nobinonly-0ubuntu0.8.04.1
$ apt-cache policy firefox-3.0 firefox-3.0: Installed: 3.0.3+build1+nobinonly-0ubuntu0.8.04.1
This is in 8.04.1 release, with Firefox 3.0.3. I just confirmed that it still occurs as well.
$ apt-cache policy firefox nobinonly- 0ubuntu0. 8.04.1
firefox:
Installed: 3.0.3+build1+
$ apt-cache policy firefox-3.0 nobinonly- 0ubuntu0. 8.04.1
firefox-3.0:
Installed: 3.0.3+build1+