am a bit late, but have now installed Ubuntu 10.04 Lucid Lynx 64-bit (on a dell Studio 1747).
The installation went without a hitch, here are the major things I had to do afterwards. Actually, nothing major, mind you.
Wireless network: install required wired network, and then activating the Broadcom STA proprietary wireless driver ( > System > Administration > Hardware drivers)
Sound: No sound would play through the headphones. Solved by adding the following line to /etc/modprobe.d/alsa-base.conf
options snd-hda-intel model=dell-m6
See also: https://help.ubuntu.com/community/HdaIntelSoundHowto
…other issues and notes later.