geek term - what branch of the linux kernel tree your computer is using ,or what branch of a particular linux distribution your computer is using.
"Whenever something breaks in gnome, I use KDE. Since I live on the Debian unstable branch, that happens ever six months or so"
"I'm now living on the 2.6 release candidate 3 branch, and its rock solid"
"I tried to live on the Mandrake cooker branch , but there were too many problems, so i jumped back to the 9.2 release"