Hang after or in loading PCI.SYS if ACPI is enabled

Context, I have not tried ReactOS for very long.

I dowloaded latest Trunk version this morning bootcd-56643-dbgwin.iso and tried it in my Netvista P4 2.26 GHz, 512 Mo, 40 Gb HD, directly booting the CD.
Not having anything usefull on it.

Installation was smooth.
But after removing CD, rebooting, I saw that it was hanging while loading PCI.SYS.

With 'screen?' boot mode, I was able to note the following warning and errors (transcribe on paper):

multi(0)disk(0)partition(1)\REACTOS\System32\Drivers\
UNIATA.SYS (..\..\ntoskrnl\io\iomgr\iorsrce.c:882) IoReport halfplemented!

BUSLOGIC.SYS (..\io\iomgr\driver.c:61) Deleting object '.\BUSLOGIC.'
(driver.c:87) HACK: Not unloading due to critical bugs

Loading USBSTOR.SYS, DISK, FASTFAT, RAMDISK,NMIDEBUG, MUP, NDIS, was all OK.

PCI.SYS
pnpmgr.c:388 Installed service 'acpi' for critical device '*PNP0C08'
(pnpinit.c: 319) IoOpenRegistryKeyEx() failed with status C0000034
iomgr\driver.c:699 ZwOpenKey() failed with status C0000034

That's it.