8.0-CURRENT: No disks found!

Regular boot gives "fatal trap #12", "no acpi" and "safe mode" both give
message "no disks found!" on sysinstall screen (partitioning). Both hashes
are OK, burned _at_x4, 3 different CDs were tried.
Asus P4S333c (SiS chipset 645/961), P4 2.4GHz, mem 768MB, ps2 keyboard, ps2
mouse, GeForce3-Ti200, monitor Viewsonic VA912b (1280x1024).
6.0, 6.2, 6.3, 6.4, 7.0 and 7.1-Beta2 - all run perfectly on that machine.
Did 8.0 drop supporting SiS? Or what could be a reason?

Another machine: Asus M3N78-VM, AthlonX2 (4450e) 2.3GHz, DDR2-800-4GB,
NVidia chip, GeForce 8200 (onboard), ps2 keyboard, usb-mouse, SATA -HDD,
SATA CD/DVD-W, all features - onboard. Monitor: SyncMaster2253bw.
8.0-CURRENT amd64 version.
With CD1 could install only Base, Kernel and docs. Anything else including
Xorg cannot be installed (error: no Index present). FTP: "there is no
distribution on ftp://... do you want to try another ftp site?"
pkg_add output: command not found. Again hashes are OK, 2 CDs were tried.

Downloaded dvd.iso 3 times: first failed _at_97% (error: cannot copy from
server), second download finished successfully but .iso file couldn't be
found (mystery!), 3-rd download was OK.
However I got the same problem with Index files on the DVD and "no
distribution" with FTP using sysinstall.
Fortunately dvd installed pkg_add and I managed to install X and then Gnome.
Currently have problem with correct resolution (1680x1050) only 1280x1024
available as maximum. There is no data for ModeLine in xorg.0.log mentioned
in handbook. Tried to force in xorg.conf:
Section Monitor:
HoryzSync     30.0-81.0
VertRefresh   50.0-76.0
Option            "DPMS"
that was accepted as well as DefaultDepth  24  under  Screen section.

Section Screen:
Modes               "1680x1050"
Doesn't work. xorg.0.log output: "not used, no such name" )
xorg.0.log + - in the attachment.

Installed KDE4 to try adjusting the resolution from there. Installed
successfully, but then on boot screen: .../kdm: no such file or directory.
The file /usr/local/bin/kdm - is there.

In general 8.0-CURRENT-amd64 runs amazingly! Much better than Ubuntu8.10x64
and Suse11.1-beta5 I tried.
Many thanks to developers!
I realize that it's not even a beta and some features might not work, but
maybe my info is useful.
Thanks once more.