They're probably referring to this, from http://en.wikipedia.org/wiki/Ksplice http://en.wikipedia.org/wiki/Ksplice. I've read the creator of Ksplice explaining

They're probably referring to this, from http://en.wikipedia.org/wiki/Ksplice http://en.wikipedia.org/wiki/Ksplice. I've read the creator of Ksplice explaining that the dropping of Red Hat support wasn't as abrupt as it sounds here: Ksplice is an open source extension of the Linux kernel ... It was developed by Ksplice, Inc. until 21 July 2011, when Oracle acquired Ksplice and started offering support for Oracle Linux. Support for Red Hat Enterprise Linux was dropped and turned into a free 30-day trial for RHEL customers as an incentive to migrate to Oracle Linux Premier Support.