With Linux, You Don't Get One Kernel of Truth... You Get ManyAs much as I love to poke at the inner workings of my computer, I'll admit that until recently, I didn't give much thought to which version of the Linux kernel my desktop system was running. For most desktop users, this isn't all that odd. Compatibility of kernel modules is often critical for servers and production systems, but day-to-day desktop usage doesn't change much from update to update.
Source:
With Linux, You Don't Get One Kernel of Truth... You Get Many
