I'm responding to Stephan's request on 2010-09-14 for feedback on the proposed kernel. First assumption here is that it is 2.6.35. I have been using the stock releases of Lucid Lynx (10.0.4 and 10.04.1) and getting the SATA errors detailed below. After installing the 2.6.35 kernel, the errors have disappeared from syslog. I can't comment on any performance changes. Kernel version:- 2.6.35-7-generic-pae Controller details:- 00:0a.0 RAID bus controller: VIA Technologies, Inc. VT6421 IDE RAID Controller (rev 50) Subsystem: VIA Technologies, Inc. VT6421 IDE RAID Controller Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Kernel driver in use: sata_via Kernel modules: sata_via 00: 06 11 49 32 07 00 90 02 50 00 04 01 00 20 00 00 10: 01 bc 00 00 01 b8 00 00 01 b4 00 00 01 b0 00 00 20: 01 ac 00 00 01 a8 00 00 00 00 00 00 06 11 49 32 30: 00 00 fe f7 e0 00 00 00 00 00 00 00 05 01 00 00 Disk details:- ATA device, with non-removable media Model Number: SAMSUNG HD103SJ Serial Number: S246J90Z106350 Firmware Revision: 1AJ100E4 Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6 Standards: Used: unknown (minor revision code 0x0028) Supported: 8 7 6 5 Likely used: 8 Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16514064 LBA user addressable sectors: 268435455 LBA48 user addressable sectors: 1953525168 Logical Sector size: 512 bytes Physical Sector size: 512 bytes device size with M = 1024*1024: 953869 MBytes device size with M = 1000*1000: 1000204 MBytes (1000 GB) cache/buffer size = unknown Form Factor: 3.5 inch Nominal Media Rotation Rate: 7200 Error message before kernel upgrade:- Sep 12 09:52:45 it2 kernel: [644545.934682] ata3.00: exception Emask 0x12 SAct 0x0 SErr 0x1000500 action 0x6 Sep 12 09:52:45 it2 kernel: [644545.935748] ata3.00: BMDMA stat 0x5 Sep 12 09:52:45 it2 kernel: [644545.936779] ata3: SError: { UnrecovData Proto TrStaTrns } Sep 12 09:52:45 it2 kernel: [644545.937835] ata3.00: failed command: READ DMA EXT Sep 12 09:52:45 it2 kernel: [644545.939072] ata3.00: cmd 25/00:00:3f:01:80/00:01:1d:00:00/e0 tag 0 dma 131072 in Sep 12 09:52:45 it2 kernel: [644545.939074] res 51/84:3f:00:00:00/84:02:00:00:00/e0 Emask 0x12 (ATA bus error) Sep 12 09:52:45 it2 kernel: [644545.941281] ata3.00: status: { DRDY ERR } Sep 12 09:52:45 it2 kernel: [644545.942423] ata3.00: error: { ICRC ABRT } Sep 12 09:52:45 it2 kernel: [644545.943505] ata3: hard resetting link Sep 12 09:52:45 it2 kernel: [644546.260046] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310) Sep 12 09:52:45 it2 kernel: [644546.276334] ata3.00: configured for UDMA/33 Sep 12 09:52:45 it2 kernel: [644546.276357] sd 2:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 12 09:52:45 it2 kernel: [644546.276363] sd 2:0:0:0: [sdb] Sense Key : Aborted Command [current] [descriptor] Sep 12 09:52:45 it2 kernel: [644546.276371] Descriptor sense data with sense descriptors (in hex): Sep 12 09:52:45 it2 kernel: [644546.276374] 72 0b 47 00 00 00 00 0c 00 0a 80 00 00 00 00 00 Sep 12 09:52:45 it2 kernel: [644546.276394] 00 00 00 00 Sep 12 09:52:45 it2 kernel: [644546.276402] sd 2:0:0:0: [sdb] Add. Sense: Scsi parity error Sep 12 09:52:45 it2 kernel: [644546.276410] sd 2:0:0:0: [sdb] CDB: Read(10): 28 00 1d 80 01 3f 00 01 00 00 Sep 12 09:52:45 it2 kernel: [644546.276427] end_request: I/O error, dev sdb, sector 494928191 Sep 12 09:52:45 it2 kernel: [644546.277515] ata3: EH complete