It seems like I am hit by the same bug. Am running an updated Ubuntu
Hardy Heron 8.04 LTS on this production machine. Hence I cannot install
intrepid to see if this bug occurs also there.

After resuming from suspend to ram I get the following errors:

[   50.148213] ata3.00: exception Emask 0x0 SAct 0xf SErr 0x0 action 0x2 frozen
[   50.148261] ata3.00: cmd 60/18:00:bf:52:c2/00:00:01:00:00/40 tag 0 ncq 12288 
in
[   50.148263]          res 40/00:fe:00:00:00/00:00:00:00:00/40 Emask 0x4 
(timeout)
[   50.148302] ata3.00: status: { DRDY }
[   50.148337] ata3.00: cmd 60/20:08:ff:91:8d/00:00:01:00:00/40 tag 1 ncq 16384 
in
[   50.148339]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
(timeout)
[   50.148376] ata3.00: status: { DRDY }
[   50.148413] ata3.00: cmd 60/20:10:be:90:f5/00:00:11:00:00/40 tag 2 ncq 16384 
in
[   50.148414]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
(timeout)
[   50.148446] ata3.00: status: { DRDY }
[   50.148475] ata3.00: cmd 60/08:18:c7:2f:b5/00:00:01:00:00/40 tag 3 ncq 4096 
in
[   50.148476]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
(timeout)
[   50.148509] ata3.00: status: { DRDY }
[   50.460012] ata3: soft resetting link
[   50.475608] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[   50.485907] ata3.00: configured for UDMA/133
[   50.485925] ata3: EH complete
[   50.485977] sd 2:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
[   50.485995] sd 2:0:0:0: [sda] Write Protect is off
[   50.485998] sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00
[   50.486025] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[   80.829931] ata3.00: exception Emask 0x0 SAct 0x1f SErr 0x0 action 0x2 frozen
[   80.830011] ata3.00: cmd 60/08:00:4f:40:4a/00:00:00:00:00/40 tag 0 ncq 4096 
in
[   80.830014]          res 40/00:fe:00:00:00/00:00:00:00:00/40 Emask 0x4 
(timeout)
[   80.830089] ata3.00: status: { DRDY }
[   80.830145] ata3.00: cmd 60/50:08:a6:92:f5/00:00:11:00:00/40 tag 1 ncq 40960 
in
[   80.830149]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
(timeout)
[   80.830218] ata3.00: status: { DRDY }
[   80.830274] ata3.00: cmd 60/10:10:07:69:46/00:00:00:00:00/40 tag 2 ncq 8192 
in
[   80.830277]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
(timeout)
[   80.830336] ata3.00: status: { DRDY }
[   80.830404] ata3.00: cmd 61/08:18:ce:c2:cb/00:00:02:00:00/40 tag 3 ncq 4096 
out
[   80.830408]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
(timeout)
[   80.830489] ata3.00: status: { DRDY }
[   80.830557] ata3.00: cmd 61/08:20:27:ad:00/00:00:00:00:00/40 tag 4 ncq 4096 
out
[   80.830560]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
(timeout)
[   80.830642] ata3.00: status: { DRDY }
[   81.141894] ata3: soft resetting link
[   81.171814] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[   81.182241] ata3.00: configured for UDMA/133
[   81.182280] ata3: EH complete

After a freeze of maybe 20s duration the computer comes back from suspend. The 
harddrive is only about half a year old and smartctl does not report problems. 
The only modification I have done is to install a fix to lower the hd 
loadcycles as per
http://ubuntuforums.org/showpost.php?p=5031046&postcount=1

-- 
ATA exception on resume from sleep
https://bugs.launchpad.net/bugs/159421
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