Public bug reported:

Since I upgraded to Oneiric, occasionally, I'm having network problems - very 
slow connections often ending in "Connection timed out" or "Interrupted 
connection". 
Shutting down the system and then powering it up again (not just rebooting) 
seems to help when this happens. As the machine cannot send reports to 
launchpad in this state, I'm attaching a saved report from when the machine was 
in this broken state.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-3.0.0-11-generic 3.0.0-11.18
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC2:  david      1638 F.... pulseaudio
 /dev/snd/controlC3:  david      1638 F.... pulseaudio
 /dev/snd/controlC1:  david      1638 F.... pulseaudio
 /dev/snd/controlC0:  david      1638 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xfe024000 irq 16'
   Mixer name   : 'Realtek ALC888'
   Components   : 'HDA:10ec0888,1458e601,00100001'
   Controls      : 40
   Simple ctrls  : 22
Card1.Amixer.info:
 Card hw:1 'Juli'/'ESI Juli@ at 0xcf00, irq 21'
   Mixer name   : 'ICE1724 - multitrack'
   Components   : ''
   Controls      : 36
   Simple ctrls  : 14
Card2.Amixer.info:
 Card hw:2 'NVidia'/'HDA NVidia at 0xfcffc000 irq 19'
   Mixer name   : 'Nvidia GPU 14 HDMI/DP'
   Components   : 'HDA:10de0014,10de0101,00100100'
   Controls      : 16
   Simple ctrls  : 4
Card3.Amixer.info:
 Card hw:3 'Headset'/'Logitech Logitech USB Headset at usb-0000:00:12.0-1, full 
speed'
   Mixer name   : 'USB Mixer'
   Components   : 'USB046d:0a0c'
   Controls      : 6
   Simple ctrls  : 2
Date: Mon Sep 19 08:31:37 2011
HibernationDevice: RESUME=UUID=bb4f6961-6d62-4f7d-9402-a451881cd3b1
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110802.1)
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. GA-MA770T-UD3P
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-11-generic 
root=UUID=20d7bd2d-3fb5-4a38-b8fd-781d352fbe4e ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.0.0-11-generic N/A
 linux-backports-modules-3.0.0-11-generic  N/A
 linux-firmware                            1.60
RfKill:
 
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/24/2009
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: GA-MA770T-UD3P
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: 
dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd06/24/2009:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA770T-UD3P:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA770T-UD3P:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-MA770T-UD3P
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


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

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https://bugs.launchpad.net/bugs/853671

Title:
  [Oneiric regression] [RTL8111/8168B] Occasional network problems

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