I've been a Linux user for almost ten years now, and Ubuntu since 4.10 (that's Oct 2004, the first version of Ubuntu) It has its fair share of kinks, but does better than most other distros.
I started off with Red Hat and then Mandrake. The first Mandrake was the first distro that I could install and run without problems. It also supported Thai, my second language. When I lived in Thailand, I used LinuxTLE, based on Red Hat. In Korea, it didn't make sense to use LinuxTLE, So I tried Fedora and Debian. I stuck with Debian until Ubuntu came out.
Ubuntu 7.04 is a nice piece of work. There is a lot of work in getting Freedesktop.org's suggestions into place, including unified multimedia capabilities based on DBus. I suspect that 7.10 will be unstoppable. I hope that the recent deal with Dell doesn't turn Canonical to the dark side.