Errore hd sata linux 2.6.22

[atax]

Ciao a tutti,

è da poco che ho riscontrato il seguente noiosissimo errore che rallenta parecchio il computer che non so come risolvere:

kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
kernel: ata1.00: (BMDMA stat 0x21)
kernel: ata1.00: tag 0 cmd 0xca Emask 0x4 stat 0x40 err 0x0 (timeout)
kernel: ata1: port is slow to respond, please be patient
kernel: ata1: port failed to respond (30 secs)
kernel: ata1: soft resetting port
kernel: ata1.00: configured for UDMA/133
kernel: ata1: EH complete
kernel: SCSI device sda: 78165360 512-byte hdwr sectors (40021 MB)
kernel: sda: Write Protect is off
kernel: SCSI device sda: drive cache: write back
kernel: ATA: abnormal status 0xD0 on port 0xD007
kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
kernel: ata1.00: (BMDMA stat 0x22)
kernel: ata1.00: tag 0 cmd 0xc8 Emask 0x20 stat 0x40 err 0x0 (host bus error)
kernel: ATA: abnormal status 0xD0 on port 0xD007
last message repeated 4 times
kernel: ata1.00: qc timeout (cmd 0xec)
kernel: ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4)
kernel: ata1.00: revalidation failed (errno=-5)
kernel: ata1: failed to recover some devices, retrying in 5 secs
kernel: ata1: port is slow to respond, please be patient
kernel: ata1: port failed to respond (30 secs)
kernel: ata1: soft resetting port
kernel: ata1.00: configured for UDMA/133
kernel: ata1: EH complete
kernel: SCSI device sda: 78165360 512-byte hdwr sectors (40021 MB)
kernel: sda: Write Protect is off
kernel: SCSI device sda: drive cache: write back

quando compare questo errore il sistema sembra bloccato e non posso fare nessuna operazione, dopo alcuni secondi ricomincia a funzionare per poi ribloccarsi alla stessa maniera

Nello stesso computer ho un'altro hard disk normale ata con windows installato e questo non da problemi (dello stesso tipo)

come posso risolvere?
per favore non mi dite che mi si è sfasciato l'hd sata
ciao e grazie