I'll get to Ubuntu Lucid 10.04 LTS Alpha 2 later, but the "safe graphics mode" boot option in that very Ubuntu live DVD helped me figure out how to get Sidux 2009-04 to boot on my Intel 82830 GCG (aka Intel 830m) graphics-running Toshiba Satellite 1100-S101. Over the course of two computing sessions I experienced both the Alpha 2 of the upcoming Ubuntu LTS release as well as the Sidux take on Debian Sid, circa early last year, both of which I've wanted to do in order to "plan" this laptop's future when I decide to leave Debian Lenny behind.