problems booting FreeBSD 5.3-RC1

Hello!

I have problems booting FreeBSD 5.3-RC1 mini-install CD (iso-file was 
downloaded from ftp://ftp.gwdg.de mirror). 
System freezes after this strings appears during "boot -v":

...
ata0-master: pio=0x0c wdma=0x22 udma=0x45 cable=80pin
ata0-master: setting PIO4 on SiS 5513 chip
ata0-master: DMA limited to UDMA33, non-ATA66 cable or device
ata0-master: setting UDMA33 on SiS 5513 chip
ad0: <FUJITSU MHS2020AT/8004> ATA-6 disk at ata0-master
ad0: 19077MB (39070080 sectors), 38760 C, 16 H, 63 S, 512 B
ad0: 16 secs/int, 1 depth queue, UDMA33
GEOM: new disk ad0
ar: FreeBSD check1 failed
ata1-master: pio=0x0c wdma=0x22 udma=0x42 cable=40pin
ata1-master: setting PIO4 on SiS 5513 chip
acd0: <QSI CD-RW/DVD-ROM SBW-161/SX14> CDRW drive at ata1 as master
acd0: read 3050KB/s (4125KB/s) write 2068KB/s (2757KB/s), 2048KB buffer, 
UDMA33
acd0: Reads: CDR, CDRW, CDDA stream, DVDROM, DVDR, packet
acd0: Writes: CDR, CDRW, test write, burnproof
acd0: Audio: play, 256 volume levels
...
GEOM: Configure ad0s1, start 32256 length 2623832064 end 2623864319
GEOM: Configure ad0s2, start 2664990720 length 8694120960 end 11359111679
GEOM: Configure ad0s3, start 11359111680 length 8644769280 end 20003880959
...
GEOM: Configure ad0s5, start 32256 length 8694088704 end 8694120959
GEOM: Configure ad0s3a, start 0 length 536870912 end 536870911
GEOM: Configure ad0s3b, start 536870912 length 134217728 end 671088639
GEOM: Configure ad0s3c, start 0 length 8644769280 end 8644769279
GEOM: Configure ad0s3d, start 671088640 length 536870912 end 1207959551
GEOM: Configure ad0s3e, start 1207959552 length 7436809728 end 8644769279

And at this point it stops and it seems it does nothing.
The similar problems I had with BETA6 and BETA7.
I am attaching to files of dmesg for normal and verbose booting of my working 
system which is
"FreeBSD vital.physik3.gwdg.de 5.2.1-RELEASE-p9 FreeBSD 5.2.1-RELEASE-p9 #0".

Please tell me what additional info you want to have.

Best regards,
Vitaliy Oliynyk