On the contrary, I feel that they are just beginning to get interested in the user experience: boot process, themes, app installation, IM integration, scanning app, etc... I have high expectations for 10.10 on this side.
Well, the user experience is more or less the point of Ubuntu, so I'd say they've been working on it since 2004. They've made a lot of progress, certainly, but it's not like they've just turned their attention to these things...
