Hi.

I have same errors running 2.6.13 kernel (without any patches except pci 
id fix) on server with two Fasttrack 4300tx and 8 disks.

Sep 20 20:53:11 espresso kernel: ata4: status=0x51 { DriveReady 
SeekComplete Error }
Sep 20 20:53:11 espresso kernel: ata4: called with no error (51)!
Sep 20 21:32:47 espresso kernel: ata7: status=0x51 { DriveReady 
SeekComplete Error }
Sep 20 21:32:47 espresso kernel: ata7: called with no error (51)!

Fortunatelly without following scsi errors.

Before  I patched libata with 2.6.13-rc7-libata1.patch and got this:

Sep 21 22:39:01 espresso kernel: ata1: translated ATA stat/err 0x25/00 
to SCSI SK/ASC/ASCQ 0x4/00/00
Sep 21 22:39:01 espresso kernel: ata1: status=0x25 { DeviceFault 
CorrectedError Error }
Sep 21 22:39:01 espresso kernel: SCSI error : <0 0 0 0> return code = 
0x8000002

ata4: status=0x51 { DriveReady SeekComplete Error }
ata4: called with no error (51)!