"nforce2" a "usb ramecek"> chyba pri kopirovani souboru nad 50MB

Zdravim,
mam motherboard MICROSTAR K7N2 Delta2-Platinum (MS-6570 v1.0).

Pri kopirovani souboru nad 50MB (z HD na disk v USB ramecku) dojde k "zatuhnuti" kopirovaciho procesu. Zadne chybove hlaseni se neobjevi. Kontrolka ramecku/disku, ktera znaci aktivitu disku pak sviti porad az do resetu PC. Soubory, ktere jsou mensi nez 50MB se zkopiruji bez problemu.

Mam nainstalovane ovladace od NVIDIA, krome zvukovky, nebot na tu pouzivam ALSU. Nekde jsem zahlednul kratkou noticku o tom, ze nforce2 nepodporuje UHCI, co to znamena?

P.S. Omlouvam se ten dlouhy "lsmod", ale treba to nekomu pomuze k identifikaci meho problemu.
Dekuji.

# uname -a
Linux dragon 2.6.8-1-k7 #1 Thu Nov 25 04:13:37 UTC 2004 i686 GNU/Linux

# lsmod
Module Size Used by
snd_pcm_oss 53352 0
snd_mixer_oss 19968 2 snd_pcm_oss
w83627hf 29060 0
i2c_sensor 2944 1 w83627hf
i2c_isa 2048 0
i2c_core 24144 3 w83627hf,i2c_sensor,i2c_isa
lp 10920 0
thermal 12816 0
fan 4044 0
button 6360 0
processor 17392 1 thermal
ac 4876 0
battery 9484 0
ipv6 262340 22
ipt_TOS 2560 12
ipt_LOG 6656 5
ipt_REJECT 7104 4
ipt_pkttype 1792 4
ipt_state 2112 7
ipt_multiport 2112 0
ipt_conntrack 2688 0
iptable_mangle 2944 1
ip_nat_irc 4400 0
ip_nat_ftp 5104 0
iptable_nat 25260 2 ip_nat_irc,ip_nat_ftp
ip_conntrack_irc 71472 1 ip_nat_irc
ip_conntrack_ftp 72240 1 ip_nat_ftp
ip_conntrack 35144 7
ipt_state,ipt_conntrack,ip_nat_irc,ip_nat_ftp,iptable_nat,ip_conntrack_irc,ip_conntrack_ftp iptable_filter 2944 1
ip_tables 18368 10
ipt_TOS,ipt_LOG,ipt_REJECT,ipt_pkttype,ipt_state,ipt_multiport,ipt_conntrack,iptable_mangle,iptable_nat,iptable_filter af_packet 22600 2
shpchp 100780 0
pciehp 97388 0
pci_hotplug 34352 2 shpchp,pciehp
forcedeth 17792 0
ehci_hcd 31364 0
ohci_hcd 21380 0
usbcore 118308 4 ehci_hcd,ohci_hcd
eth1394 21768 0
parport_pc 36932 1
parport 41544 2 lp,parport_pc
ohci1394 35588 0
ieee1394 111352 2 eth1394,ohci1394
nls_iso8859_1 4096 1
vfat 14656 1
fat 46720 1 vfat
nls_cp437 5760 3
ntfs 102164 2
sd_mod 21632 2
dm_mod 59644 0
capability 4616 0
commoncap 7296 1 capability
sata_nv 8516 1
snd_intel8x0 33724 2
snd_ac97_codec 76448 1 snd_intel8x0
snd_pcm 97288 3
snd_pcm_oss,snd_intel8x0,snd_ac97_codec tsdev 7360 0
mousedev 10444 1
evdev 9600 0
snd_timer 25796 1 snd_pcm
snd 58468 8
snd_pcm_oss,snd_mixer_oss,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer soundcore 10400 2 snd
snd_page_alloc 10120 2 snd_intel8x0,snd_pcm
nvnet 70308 0
nvidia_agp 7836 1
agpgart 34536 2 nvidia_agp
fglrx 234492 7
libata 41412 1 sata_nv
scsi_mod 124748 2 sd_mod,libata
psmouse 20232 0
genrtc 9652 0
ext3 126760 3
jbd 61784 1 ext3
mbcache 9220 1 ext3
ide_generic 1472 0
ide_disk 19264 8
amd74xx 14108 1
ide_core 138724 3 ide_generic,ide_disk,amd74xx
unix 28596 110
font 8448 0
vesafb 6688 0 cfbcopyarea 3776 1 vesafb cfbimgblt 3072 1 vesafb cfbfillrect 3712 1 vesafb

Dotaz: "nforce2" a "usb ramecek"> chyba pri kopirovani souboru nad 50MB