[Hardware] ошибки в dmesg

[Serge]

Здравствуйте!
в логах наблюдаю ошибки.
ATA: abnormal status 0x7F on port 0xC407

 Они критичны?

выдержка из dmesg
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata2.00: ATAPI, max UDMA/100
ata2.00: configured for UDMA/100
  Vendor: ATA       Model: WDC WD1600AAJS-0  Rev: 05.0
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sda: 312581808 512-byte hdwr sectors (160042 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
SCSI device sda: 312581808 512-byte hdwr sectors (160042 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
 sda: sda1 sda2 sda3 < sda5 sda6 > sda4
sd 0:0:0:0: Attached scsi disk sda
  Vendor: HL-DT-ST  Model: DVDRAM GH20NS10   Rev: EL00
  Type:   CD-ROM                             ANSI SCSI revision: 05
ACPI: PCI Interrupt Link [LSA1] enabled at IRQ 22
ACPI: PCI Interrupt 0000:00:08.1[B] -> Link [LSA1] -> GSI 22 (level, low) -> 
IRQ 209
PCI: Setting latency timer of device 0000:00:08.1 to 64
ata3: SATA max UDMA/133 cmd 0xC800 ctl 0xC482 bmdma 0xC000 irq 209
ata4: SATA max UDMA/133 cmd 0xC400 ctl 0xC082 bmdma 0xC008 irq 209
scsi2 : sata_nv
ata3: SATA link down (SStatus 0 SControl 300)
ATA: abnormal status 0x7F on port 0xC807
scsi3 : sata_nv
ata4: SATA link down (SStatus 0 SControl 300)
ATA: abnormal status 0x7F on port 0xC407