Changelog for kmod-thinkpad_acpi-0.23-1.el6.elrepo.i686.rpm :

* Sun Mar 06 2011 Philip J Perry - 0.23-1- Initial el6 build of the kmod package- Backport support for X100e into the RHEL6 driver [thinkpad_acpi-x100e.patch] [http://elrepo.org/bugs/view.php?id=118]