Get it from the usual mirrors (aarnet seems to be getting a little hammered right now):
http://www.piau.lkams.kernel.org/pub/linux/kernel/v2.6/ http://www.planetmirror.lkams.kernel.org/pub/linux/kernel/v2.6/
Redhat RPMs are available as well for those who swing that way:
http://people.redhat.com/arjanv/2.5/RPMS.kernel/
I think these RPMs are more for Fedora systems, but I've been using them on my Redhat 9 laptop without any real problems.
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