Thank you for responding.
That is the odd thing. Most of the errors I've seen of this type are followed by some type of IO error. I don't see that here. The closest device is the tape drive. It works fine. I've done test backups and restores using this system.
Last 50 lines of dmesg
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uhci_hcd 0000:00:1d.0: UHCI Host Controller
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: irq 169, io base 00002200
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
ACPI: PCI interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 177
uhci_hcd 0000:00:1d.1: UHCI Host Controller
PCI: Setting latency timer of device 0000:00:1d.1 to 64
uhci_hcd 0000:00:1d.1: irq 177, io base 00002600
uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
SELinux: initialized (dev ramfs, type ramfs), uses genfs_contexts
NET: Registered protocol family 10
Disabled Privacy Extensions on device c0342040(lo)
IPv6 over IPv4 tunneling driver
divert: not allocating divert_blk for non-ethernet device sit0
ACPI: Power Button (FF) [PWRF]
EXT3 FS on sda2, internal journal
device-mapper: 4.5.0-ioctl (2005-10-04) initialised:
dm-devel@redhat.com
cdrom: open failed.
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda1, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
SELinux: initialized (dev sda1, type ext3), uses xattr
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda5, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
SELinux: initialized (dev sda5, type ext3), uses xattr
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda6, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
SELinux: initialized (dev sda6, type ext3), uses xattr
Adding 2032212k swap on /dev/sda3. Priority:-1 extents:1
SELinux: initialized (dev binfmt_misc, type binfmt_misc), uses genfs_contexts
parport0: PC-style at 0x378 [PCSPP]
st0: Block limits 1 - 16777215 bytes.
ip_tables: (C) 2000-2002 Netfilter core team
ip_conntrack version 2.1 (8192 buckets, 65536 max) - 340 bytes per conntrack
SELinux: initialized (dev rpc_pipefs, type rpc_pipefs), uses genfs_contexts
SCSI error : <0 0 0 0> return code = 0x70000
parport0: PC-style at 0x378 [PCSPP]
lp0: using parport0 (polling).
lp0: console ready
eth0: no IPv6 routers present