Funny how I was reading this review about Ubuntu 9.10 just a few minutes ago. It's a very comprehensive review that covers a lot of things, though the reviewer, an experienced Linux user, had encountered quite a few problems, it just goes to show that Linux isn't going to kill Windows anytime soon. But remember that Ubuntu isn't the only Linux distro available, and also
the fact/myth (please underline the correct answer) that Linux has a habit of working well on some PCs while having problems on others.
http://www.dedoimedo.com/computers/ubuntu-9-10.html
Also, the reviewer will be reviewing Kubuntu, Xubuntu, OpenSUSE and Fedora soon so stay tune.