Qole, did you read my post earlier?
Metapackage "ubuntu-mobile" in jaunty installs Gnome, with that Xandros-style launcher. If you were looking metapackage for Ubuntu-MID, UME as we should call it, there is no metapackage available for it this far.

EDIT: To get UME:
apt-get install bluetooth bluez-gnome gnome-volume-manager gtk2-engines-sapwood hildon-control-panel hildon-desktop hildon-theme-mobile-basic matchbox-keyboard matchbox-window-manager midbrowser kourou moblin-keyboard-manager moblin-media network-manager-gnome