Aleksey Bragin wrote:
  "2nd stage boots" != "2nd stage
completes and reboots without
 errors" :-).
 I have no idea about that other hang -- I was tracking the hang which
 happens during system initalization (on a few vmwares it was just
 hanging, and on one it gave me proper exception), when even GUI does
 not appear. I narrowed it down to the 25629 revision, and then found
 out about the KeLoaderBlock thing.
 Maybe with this fix I can boot other revisions and do regression-
 testing regarding the "other" hang.
  
629, 630, 631 or 632 cause it.
--
Best regards,
Alex Ionescu
Project Lead, TinyKRNL
Kernel-Mode Software Design Engineer, ReactOS