I bought the diskless version, so I can't say anything about the shipped disk.
It is Ubuntu Jaunty, not the adapted Hardy version available here.
Hope this helps
hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 1014 MB in 2.00 seconds = 506.78 MB/sec
Timing buffered disk reads: 182 MB in 3.03 seconds = 60.14 MB/sec
hdparm -i /dev/sda
/dev/sda:
Model=WDC WD3200BMVS-11F9S0 , FwRev=01.01A11, SerialNo= WD-WXH808384331
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=625142448
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma6
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7
* signifies the current active mode