SiL 3114, ошибки в логе

Имеем в наличии контроллер
00:0b.0 Mass storage controller: Silicon Image, Inc. SiI 3114 [SATALink/SATARaid] Serial ATA Controller (rev 02)
и винт WDC WD7500AAKS
все это хозяйство воздружено на asus P3B-F и около недели работало без проблем. Потом в логах появилось такая вот фигня, при обращении к винту -

Sep 22 11:35:53 router kernel: ata4.00: BMDMA2 stat 0x1d0009
Sep 22 11:35:53 router kernel: ata4: SError: { 10B8B BadCRC }
Sep 22 11:35:53 router kernel: ata4.00: cmd c8/00:00:ef:ca:14/00:00:00:00:00/e5 tag 0 dma 131072 in
Sep 22 11:35:53 router kernel: res 51/04:df:10:cb:14/00:00:00:00:00/f5 Emask 0x1 (device error)
Sep 22 11:35:53 router kernel: ata4.00: status: { DRDY ERR }
Sep 22 11:35:53 router kernel: ata4.00: error: { ABRT }
Sep 22 11:35:53 router kernel: ata4.00: configured for UDMA/100
Sep 22 11:35:53 router kernel: ata4: EH complete
Sep 22 11:35:53 router kernel: sd 3:0:0:0: [sda] 1465149168 512-byte hardware sectors (750156 MB)
Sep 22 11:35:53 router kernel: ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x280000 action 0x0
Sep 22 11:35:53 router kernel: ata4.00: BMDMA2 stat 0x1c0009
Sep 22 11:35:53 router kernel: ata4: SError: { 10B8B BadCRC }
Sep 22 11:35:53 router kernel: ata4.00: cmd c8/00:30:3f:f5:e2/00:00:00:00:00/e4 tag 0 dma 24576 in
Sep 22 11:35:53 router kernel: res 51/04:00:6e:f5:e2/00:00:00:00:00/f4 Emask 0x1 (device error)
Sep 22 11:35:53 router kernel: ata4.00: status: { DRDY ERR }
Sep 22 11:35:53 router kernel: ata4.00: error: { ABRT }
Sep 22 11:35:53 router kernel: ata4.00: configured for UDMA/100
Sep 22 11:35:53 router kernel: ata4: EH complete
Sep 22 11:35:53 router kernel: sd 3:0:0:0: [sda] Write Protect is off
Sep 22 11:35:53 router kernel: sd 3:0:0:0: [sda] Mode Sense: 00 3a 00 00
Sep 22 11:35:53 router kernel: sd 3:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Sep 22 11:35:53 router kernel: sd 3:0:0:0: [sda] 1465149168 512-byte hardware sectors (750156 MB)
Sep 22 11:35:53 router kernel: sd 3:0:0:0: [sda] Write Protect is off
Sep 22 11:35:53 router kernel: sd 3:0:0:0: [sda] Mode Sense: 00 3a 00 00
Sep 22 11:35:53 router kernel: sd 3:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Sep 22 11:35:53 router kernel: ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x280000 action 0x0
Sep 22 11:35:53 router kernel: ata4.00: BMDMA2 stat 0x1d0009
Sep 22 11:35:53 router kernel: ata4: SError: { 10B8B BadCRC }
Sep 22 11:35:53 router kernel: ata4.00: cmd c8/00:00:9f:48:bb/00:00:00:00:00/e5 tag 0 dma 131072 in
Sep 22 11:35:53 router kernel: res 51/04:8f:10:49:bb/00:00:00:00:00/f5 Emask 0x1 (device error)

Перезагрузка не помогла, но помогло выключение на несколько минут. Проработало около 2х суток, после чего картина повторилась, винт протестировал, бедов нет. Система debian etch, ядро 2.6.24 из репозитария. Собственно кто виноват - винт, контроллер или ядро?