As a researcher in the area of runtime software upgrades, I'm excited to see this post here and am curious what the HN community thinks of Ksplice. Does your p

As a researcher in the area of runtime software upgrades, I'm excited to see this post here and am curious what the HN community thinks of Ksplice. Does your product demand extremely high availability with the further constraint that you can't just shift the workload to another machine to perform an OS (or application) upgrade? If so what are the circumstances? (e.g., Does your program maintain long-running connections that can't be broken?) Are there times when you have been unable to upgrade your OS or server program because you couldn't sacrifice availability? I'd love to get in touch with people who are working under these constraints.