http://en.wikipedia.org/wiki/Android_version_history http://en.wikipedia.org/wiki/Android_version_history http://en.wikipedia.org/wiki/Linux_kernel#Timeline ht

http://en.wikipedia.org/wiki/Android_version_history http://en.wikipedia.org/wiki/Android_version_history http://en.wikipedia.org/wiki/Linux_kernel#Timeline http://en.wikipedia.org/wiki/Linux_kernel#Timeline From these two it is fairly easy to tell how current the kernel is for any rev of android out there. A quick cross comparison shows that it was more or less current at time of release but isn't updated afterwards. This means there are quite a few three or four year old kernels out there since most devices are in the 2.x range. I am not sure what qualifies as ancient, but I never really had a problem with the 2.6 kernel line.