Have you ever get annoyed because you are in the middle of work and your operating system asks you repetitively to rsetart to apply updates?
with Ksplice, no restart is required. It does an in-memory operation to update kernel.
Many definition would be changed of service management such as testing/development environment and production environment for applying patches.
It is free for Ubuntu user editions and costs nearly 4$ a month for server editions.
have a look: http://www.ksplice.com/
