There is none. All of us hope that the next version will be more stable.
While the former is shared by most, the latter is richer.
One's a rugrat, the other's a regret.
They're always rebooting.
A virus does something.
asked the teacher hoping that someone would say "babies." She was disappointed when all the children cried out "Happy!"
Hot wheels (First joke, hope you like it.)
Pac Man-free Ver.
XP Edit: Explanation(http://en.wikipedia.org/wiki/ChiRho)