First off all let me say this, I am an advocate of linux, a network administrator with my systems stuck in Windows because of upper management. I use linux to keep our budget in line, and ease of managing windows system setups.
I have always hated Ubuntu as a professional user, feeling as if linux is a server tool, not a toy for people who want to check their email. My feeling on this has waned overtime and seeing the next wave of Windows operating system coming out as something more stripped down, more restrictive, and heavier license fees, this is the time to strike!
Ubuntu needs to get some DESIGNERS, and programmers together to create a beautiful intuitive gui, something that has a unique but uninhibiting flow.
Windows 7 has beauty and simplicity for its users, this is IT, no security, no special benifits, why dont we show them what we have for once! Balmers famous rant about "DEVELOPERS!" shows the problem here, we are the developers, steal some of there damn designers before 7 ships. or hell, use their tactics and promise them something better and dont deliver for a while ;)