Comment 45 for bug 578546

[29482.688084] ata1: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xe frozen
[29482.688091] ata1: irq_stat 0x00400000, PHY RDY changed
[29482.688096] ata1: SError: { PHYRdyChg CommWake }
[29482.688103] ata1: hard resetting link
[29483.430155] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[29483.463472] ata1.00: configured for UDMA/133
[29483.463482] ata1: EH complete
[29521.350286] Skipping EDID probe due to cached edid
[29573.976341] npviewer.bin[5370]: segfault at 0 ip 00000000f61768c1 sp 00000000ff970e40 error 4 in libflashplayer.so[f5dae000+b5f000]
[29613.172951] npviewer.bin[5720]: segfault at 418 ip 00000000f60bdd16 sp 00000000ff8414a8 error 6 in libflashplayer.so[f5e50000+b5f000]
[29748.320173] Skipping EDID probe due to cached edid
[29756.091266] npviewer.bin[5848]: segfault at 418 ip 00000000f60fcd16 sp 00000000ffab1fb8 error 6 in libflashplayer.so[f5e8f000+b5f000]
[29855.585426] npviewer.bin[5905]: segfault at f2d1c0b4 ip 00000000f615a8b3 sp 00000000ffb31bf0 error 4 in libflashplayer.so[f5d92000+b5f000]
[29861.583064] npviewer.bin[5962]: segfault at 418 ip 00000000f6031d16 sp 00000000ff978a48 error 6 in libflashplayer.so[f5dc4000+b5f000]
[29865.753505] ptrace of non-child pid 3724 was attempted by: chrome (pid 2078)
[29865.753510] ptrace of non-child pid 3725 was attempted by: chrome (pid 2078)
[29865.757558] npviewer.bin[5980]: segfault at f2905004 ip 00000000f64deb8c sp 00000000ffcfc880 error 4 in libflashplayer.so[f5e75000+b5f000]
[29871.941899] npviewer.bin[6011]: segfault at f58510b4 ip 00000000f61fd8b3 sp 00000000ffa2ce30 error 4 in libflashplayer.so[f5e35000+b5f000]
[29929.127609] npviewer.bin[6033]: segfault at f02000ac ip 00000000f61918d7 sp 00000000ffd5b2e0 error 4 in
libflashplayer.so[f5dc9000+b5f000]

Hello
Sorry to said but seems that your HD is having serious problem, make a backup of all important data.

 ata1: SError: { PHYRdyChg CommWake }
ata1: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xe frozen