This bug affects me  in Ubuntu 12.10 64bit with Gnome Shell.

I am letting MatLab (numerical computing environment) read 'large'
quantities (80 at the moment) of image files of 2MB each. I use the
/run/user/$user/gvfs/... as directory to access. When experimenting I
have also tried letting the MatLab script sleep for 10 seconds in
between reading every image file, but to no avail. Maybe the bug is not
time-related?

Somewhere in the process of reading the files the MatLab script just
freezes and then it does not even react to  the abort command Ctrl+C.
After trying to kill the MatLab process using System Monitor or by
running the kill command in terminal, the process becomes a Zombie
process which I cannot kill.

The same happens when copying the files with PC Man FM file manager or
copying using the terminal. I have tried both on a wireless and a wired
network connection.

I hope this information is somehow helpful.

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https://bugs.launchpad.net/bugs/1075923

Title:
  nautilus hangs copying large directories from a samba share

Status in “gvfs” package in Ubuntu:
  Confirmed

Bug description:
  I have a large directory, almost 50Gb and 45.000 files shared by samba on 
ubuntu 12.04.1 LTS server.
  I used to copy the whole directory regularly on my desktop, and execute a 
backup with deja dup on that.
  I did also often backup directly from the samba share.
  After upgrading my client to 12.10, copying the directory hangs randomly, 
sometimes after having copied just 1 Gb, others having almost completed the 
whole transfer.
  It just hangs, without any crash.

  I noted the also Deja -dup shows the same behaviour, now it's impossible to 
complete a backup from the share, it just hangs.
  It seems to me that a bug in the samba client might be the cause of these 
issues, since neither nautilus nor Deja-dup have problems with local large 
directories.

  my system: Ubuntu 12.10 AMD64
  nautilus: 1:3.5.90.really.3.4.2-0ubuntu4
  deja-dup: deja-dup 24.0-0ubuntu1
  smbclient 2:3.6.6-3ubuntu5
  samba-common: 2:3.6.6-3ubuntu5
  samba-common-bin: 2:3.6.6-3ubuntu5

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: nautilus 1:3.5.90.really.3.4.2-0ubuntu4
  ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
  Uname: Linux 3.5.0-18-generic x86_64
  ApportVersion: 2.6.1-0ubuntu6
  Architecture: amd64
  Date: Wed Nov  7 12:05:58 2012
  GsettingsChanges: b'org.gnome.nautilus.window-state' b'geometry' 
b"'825x550+853+471'"
  InstallationDate: Installed on 2012-10-22 (16 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MarkForUpload: True
  SourcePackage: nautilus
  UpgradeStatus: No upgrade log present (probably fresh install)

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