Dag Wieers wrote:
Take a look at the upstream kernels, which are close to what is (or will be) in RHEL 5.3: http://people.redhat.com/dzickus/el5/
The only caveat being that the test kernels on people.r.c are notorious for carrying patches that are never released into the distro. But apart from that those kernels might be a good place to start.
- KB