The article sounds indeed more like a rant made public about a problem. Of course, this doesn't deny there is problems with 9.10, but heh, it was in alpha/beta, as the others, and nothing really "that serious" was pointed out I think. Anyway, people ranting loudly enough to make it to The Register may learn that they can also participate in testing the releases..
As for my story, I was running 9.10 since alpha, and it went quite nicely.. Minor pulseaudio glitches that were solved over time and so on. At work and on my laptop, I've upgraded from Jaunty to Karmic when offered to do so by the update manager, and it went nicely too. No problem here, not even a dependency issue, it really went fine, and 2.6.31 is really nice to my setups ;)
About all this issue.. I can't help but think it's more a PR prank than a real spotted issue.. The bugtracker doesn't tell that "that many" users are impacted, and also, that it may be more due to a ATI-card weirdness.. Heh. Not ubuntu's fault in the end, even if they could have worked around it..