[snuxoll]

Let's take this example: Kernel update with security fix gets pushed out, said fix ended up causing issues with a network card or some other component and causes panics. Can a sysadmin revert to previous kernel revision? Sure. Should they have to do so, submit a bug and pray someone pays attention to it? I don't think that's a great idea.

Replacing hardware isn't always a solution, especially when it comes to specialized setups for databases, file storage, etc. Knowing your vendor has kernel engineers on staff that can tear through a kernel dump and get you a hotfix ASAP to test is important.

Startups may not care, smaller companies may not, but we're a medical billing company that has over 1,000 employees that need systems to be up - if they're down not only has work stopped but we're either paying employees for doing nothing or having to send them home unpaid (which makes THEM unhappy). Facebook having servers randomly kernel panicing affects their engineering team and causes small hiccups to their users (who don't pay them a dime), we have the productivity of our own employees and their livelihoods riding on the line.