Maciek Rutecki wrote:

ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
ata1.00: irq_stat 0x40000001
ata1.00: cmd 25/00:00:10:0b:f3/00:04:05:00:00/e0 tag 0 cdb 0x0 data
524288 in
         res 51/40:a4:6c:0b:f3/00:03:05:00:00/e0 Emask 0x9 (media error)
ata1.00: configured for UDMA/100

Then system continue booting without resume.

I use smartctl and check disk 2 times and run fsck/mkswap -c and I have
no erros:

=================
  5 Reallocated_Sector_Ct   0x0033   100   100   024    Pre-fail  Always
      -       8589934592000
196 Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always
      -       444268544

It very much looks like the disk is dying.  Dunno why it doesn't show up
during SMART testing but you better back up and contact the hardware vendor.

-- 
tejun