I have purchased one Vostro 3360 that appears to be supported by Ubuntu.
I have problems with Ethernet (I solved with alx drivers) and touchpad Alps (scroll not working) after install Ubuntu 12.04. (Same with Debian Testing and Ubuntu 12.10 beta 1)
I can't select touchpad options in GNOME and Touchpad appears as PS/2 Mouse with xinput --list.
I found information in several bug reports but nothing works.
[psmouse solution] with this I can select Touchpad settings but scroll is still not working.
Oneiric packages from DELL http://wielki.tk/vostro/ with this everything works but the mousepad response is very bad and sometimes all the machine hangs completely)
I only installed: http://wielki.tk/vostro/debs/glidepoint_3.6-10_amd64.deb
: http://ubuntuforums.org/showthread.php? t=1887683&page=2