Comment 18 for bug 550559

Same here :-(

After adding "libata.force=noncq" to kernel-bootparameters, the error changed to

exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
irq_stat 0x40000001
failed command: READ DMA EXT
cmd 25/00:e0:df:d7:f8/00:00:88:00:00/e0 tag 0 dma 114688 in
         res 51/40:00:f5:d7:f8/00:00:88:00:00/e0 Emask 0x9 (media error)
status: { DRDY ERR }
error: { UNC }
configured for UDMA/133
EH complete

when reading big files fast. I think the disaster began suddenly about two months ago.

Running lucid up to date. HDs: raid5/lvm.