Simon, I am really really sorry, I don't have any spare computer where to install Dapper right now.
Also, with regard to bug 20330, there are two different issues commented there:
1. hp-info /hp-makeuri (from hplip) failing to work.
2. gnome-cups-manager not allowing to create hp:// uris.
Issue 2 is what this bug is about. Issue 1 is what bug 20330 and bug 25629 are about (different printers, though). I guess issue 1 can only be solved by HP.
Simon, I am really really sorry, I don't have any spare computer where to install Dapper right now.
Also, with regard to bug 20330, there are two different issues commented there:
1. hp-info /hp-makeuri (from hplip) failing to work.
2. gnome-cups-manager not allowing to create hp:// uris.
Issue 2 is what this bug is about. Issue 1 is what bug 20330 and bug 25629 are about (different printers, though). I guess issue 1 can only be solved by HP.