I have a couple of Compaq ES-45's (Titan/Privateer) and the version of aboot the debian-installer* uses won't work with them. I made a custom boot disk using a more current version of aboot and that booted fine. Are there any plans to use a newer version of aboot in the debian-installer for the alpha platform? If so, I would gladly test it.
* I used the debian-testing-alpha-netinst.iso built on 05/31/2005