It makes me wonder whether it is a sign that desktop responsiveness has been neglected by the kernel devs which possibly prioritize server issues. I had read a Google engineer suggesting Canonical should hire decent kernel developers : " P.S. Next thing for Ubuntu to learn --- how to pay their engineers well enough, and how to give them enough time to work on upstream issues, that once they gain that experience on Ubuntu's dime and become well known in the open source community, they don't end jumping ship to companies like Red Hat or Google. :-)"

http://news.ycombinator.com/item?id=1321029