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[Ubuntu-QC-1 <1308751@xxxxxxxxxxxxxxxxxx>]

I'm afraid I cannot say with any precision, but this is not recent.

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https://bugs.launchpad.net/bugs/1308751

Title:
  Transfer to USB drive slows down to a crawl

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  This problem has been affecting this computer release after release for as long as I can remember.
  Kernel is 3.13.0-24-generic #46

  When transferring 2.7 Go to a fat32 formatted USB drive, transfer
  starts at 50 Mb/s and finishes at 5.6 Mb/s, with the transfer dialog
  staying open for minutes with 0 Mb left to transfer.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ao         2970 F.... pulseaudio
   /dev/snd/controlC0:  ao         2970 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Apr 16 16:29:42 2014
  InstallationDate: Installed on 2014-04-06 (10 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140404)
  MachineType: System manufacturer System Product Name
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=b49aac97-cebf-48a0-b5b2-db2b0c148a81 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/09/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1501
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: M4A88TD-M/USB3
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1501:bd08/09/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A88TD-M/USB3:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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