pomala cache na hdd

Nazdar,
mam Ubuntu 7.10, ale som trosku nestastny z vykonu harddisku
Ked napisem sudo hdparm -tT /dev/hda dostanem:

/dev/hda:
Timing cached reads: 354 MB in 2.00 seconds = 176.63 MB/sec
Timing buffered disk reads: 54 MB in 3.09 seconds = 17.45 MB/sec

Problem je v cache - 176 MB je pomale - hlavne ak ostatni maju hodnoty okolo 1000.
Jasne neocakavam zazraky, ale taka hodnota okolo 500 je realna

sudo hdparm -i /dev/hda
/dev/hda:

Model=ST310211A, FwRev=3.39, SerialNo=7DB1VAXW
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=1024kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=19541088
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5

sudo hdparm /dev/hda

/dev/hda:
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 19386/16/63, sectors = 19541088, start = 0


lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 03)
00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)
00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:07.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 16)
00:07.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 16)
00:07.4 Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
00:07.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 Audio Controller (rev 50)
00:0c.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY [Radeon 7000/VE]

DMA sa neda zvysit - pretoze mam 40 zilovy kabel ATA33. Pouzity je z toho dvovodu, ze ked som mal 80 zilovy, tak udma ani nexcelo nabehnut....to hdd cital rychlostou 2MB/s namiesto 17. Skusal som to aj forcnut ale nejde to.
Hladal som snad vsade...skusal som aj tu:
http://ubuntuforums.org/showthread.php?t=19519
ale bezvyznamne.

Ma niekto nejake napady??? Matus