Public bug reported:

This bug is similar to Bug #810606 (Slow cifs in 11.04). I'm reporting
it because that one is marked EXPIRED while the issue is still not
fixed.

Transferring files to and from cifs shares, mounted via fstab entries,
is a considerably slow process in nautilus. Transferring to same shares
via rsync or ssh is 2-3x faster. Over my wireless network, I get speeds
of ~5MB/s with rsync and ssh. In nautilus, speed drops to 2.5MB/s max.
I've set the CIFSMaxShare to 130048 and rsize option in the fstab entry
but it doesn't seem to make any difference.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: cifs-utils 2:5.1-1ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-33.52-generic 3.2.31
Uname: Linux 3.2.0-33-generic x86_64
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Thu Dec  6 01:52:10 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: cifs-utils
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: cifs-utils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise running-unity

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https://bugs.launchpad.net/bugs/1087000

Title:
  slow transfer speed for cifs shares in nautilus

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