The word "ubuntu" in Zulu means "humanity towards others." Mark Shuttleworth, a South African, picked it as the name of his Linux distribution. Clinton used "ubuntu" in the local language to make a connection with the humanity towards others that his foundation supposedly stands for.
It's like I said earlier, if Clinton said "We have a new vista ahead of us" in some blathering about the future his foundation will supposedly create, you wouldn't be thinking he's promoting Windows, would you?
The writer of the article makes it out as a Linux reference. That's the basis of my comments.
Oh, come on, we all know it's a racial slur.