USB disk problem with kernel 1287

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   I've mounted and umounted it fine for short periods. 
   I could happily read and write no problem. IN KDE a lovely
   USB icon appears on desktop and I click it things are lovely.

   Right click and unmount no problem.

   Today I plugged it in and left it idle (with a browser cd'd
   in the mounted directory).

   I see this in the log file:

: usb 2-1: new full speed USB device using uhci_hcd and address 3
: scsi3 : SCSI emulation for USB Mass Storage devices
:   Vendor: KM        Model: DiMAGE X50        Rev: 1.
:   Type:   Direct-Access                      ANSI SC SI revision: 02
: SCSI device sdb: 1984000 512-byte hdwr sectors (1016
 MB)
: sdb: Write Protect is off
: sdb: assuming drive cache: write through
: SCSI device sdb: 1984000 512-byte hdwr sectors (1016 MB)
: sdb: Write Protect is off
: sdb: assuming drive cache: write through
:  sdb: sdb1
: Attached scsi removable disk sdb at scsi3, channel 0 , id 0, lun 0
scsi.agent[12230]: disk at /devices/pci0000:00/0000:00:1d.0/
usb2/2-1/2-1:1.0/host3/target3:0:0/3:0:0:0

  [ I guess success on pluggin it in ... ]


   ...

  [ then this ... ]

: usb 2-1: USB disconnect, address 4
: sdb : READ CAPACITY failed.
: sdb : status=0, message=00, host=1, driver=00
: sdb : sense not available.
: sdb: Write Protect is off
: sdb: assuming drive cache: write through
: sdb : READ CAPACITY failed.
: sdb : status=0, message=00, host=1, driver=00
: sdb : sense not available.
: sdb: Write Protect is off
: sdb: assuming drive cache: write through
:  sdb:<3>scsi4 (0:0): rejecting I/O to device being r
: Buffer I/O error on device sdb, logical block 0
: scsi4 (0:0): rejecting I/O to device being removed
: Buffer I/O error on device sdb, logical block 0
: scsi4 (0:0): rejecting I/O to device being removed
: Buffer I/O error on device sdb, logical block 0
: scsi4 (0:0): rejecting I/O to device being removed
: Buffer I/O error on device sdb, logical block 0
:  unable to read partition table
   
   I also have a (huge) load of these - all the time - related or not?

multipathd: no devmap found
multipathd: can't get devmaps ... retry


  Now If I plug it in I get info in log file but no mount happens and
  no directory is made in /media/

: usb 2-1: new full speed USB device using uhci_hcd an d address 6
: scsi6 : SCSI emulation for USB Mass Storage devices
: no devmap found
: can't get devmaps ... retry
:   Vendor: KM        Model: DiMAGE X50        Rev: 1.
:   Type:   Direct-Access                      ANSI SCSI revision: 02
: SCSI device sdb: 1984000 512-byte hdwr sectors (1016 MB)
: sdb: Write Protect is off
: sdb: assuming drive cache: write through
: SCSI device sdb: 1984000 512-byte hdwr sectors (1016 MB)
: sdb: Write Protect is off
: sdb: assuming drive cache: write through
:  sdb: sdb1
: Attached scsi removable disk sdb at scsi6, channel 0
, id 0, lun 0
.agent[13029]: disk at /devices/pci0000:00/0000:00:1d.0/
usb2/2-1/2-1:1.0/host6/target6:0:0/6:0:0:0
: no devmap found
: can't get devmaps ... retry


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