I just got an update from Dave Jones' repository at
http://people.redhat.com/~davej/
And yum picked up on the alpha kernel there. I assume this is actually 2.6.18-rc7, but in any case...
Worksforme(tm Redhat). Machines are a P4 3.06 GHZ (HT turned on) SW technology machine with a raid 0 array on one machine, and just an IDE drive on another machine. 1.5 GB RAM on both. I saw no error messages on boot up, which I did see on the 2.6.17 kernels (mostly warning messages from bugs posted already here and on bugzillillillillillillalalalalala).
******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** *******************************************************************************