I understand what you mean about the driver, but there is still the problem with the upgrade to 12.10 not working properly. I still have the problem of unity not working
when I start up my computer and why I have to enter unity in a terminal to get it to work.
You also should check out the article in Linux Format Magazine, the article doesn't paint a pretty picture about ubuntu 12.10 performance rating of 4 out of 10 and overall score of 6 out of 10.