Reading Package Lists... Building Dependency Tree... Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming.
Since you only requested a single operation it is extremely likely that the package is simply not installable and a bug report against that package should be filed. The following information may help to resolve the situation:
Sorry, but the following packages have unmet dependencies: gnome: Depends: gnome-core (= 28) but it is not going to be installed Depends: pan but it is not going to be installed
I put the GNOME 2.2 line into a woody machine and got similar results. I then tried apt-get install pan, which yielded another bunch of unmet dependencies. I then followed this trail (gnome, pan, libgtk2.0-0, libxft2) and eventually discovered that it's the versioned dependencies on X 4.2 which are causing the problem. As stated on Colin Walters page, you need to install X 4.2 before GNOME 2. See:
http://lists.debian.org/debian-user/2003/debian-user-200302/msg04019.html
-- Jon
