"An"? I had no idea!
Saying 'an Ubuntu Unity close cousin' instead of 'a Ubuntu Unity close cousin' tells me something I should probably have known (or did and forgot again), specifically that 'Ubuntu' is pronounced 'oobuntu' and not 'yoobuntu'.
Now I feel thick. More than usual anyway.
Probably my fault, maybe I should have read the footnote on their website. At least back in the olden days you had Linus telling you how to properly pronounce "Linux" when you set up the sound card. Unless that was just Red Hat, which I'm now starting to doubt as to whether it was pronounced the way you would expect. "reed hut"? "rude hot"?