Reference: http://oss.oracle.com/pipermail/el-errata/2011-January/001791.html
Oracle Linux 5.6 ships with following three sets of kernel packages
* Unbreakable Enterprise Kernel [kernel-uek-2.6.32-100.26.1.el5]
o Only available on x86_64 (64bit) platform
o This kernel will be [...]
