Public bug reported:

Thinkpad t400
Network controller: Intel Corporation Ultimate N WiFi Link 5300


Connection drops every (almost exactly) 5 minutes. PC stalls for several 
seconds during :

"kernel: [ 2068.078667] ieee80211 phy0: Hardware restart was requested"

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-26-generic 3.5.0-26.42
ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
Uname: Linux 3.5.0-26-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  lubov      1640 F.... pulseaudio
Date: Sun Mar 31 11:00:48 2013
HibernationDevice: RESUME=UUID=7a539902-20fd-4640-8fa3-b742eabab578
InstallationDate: Installed on 2013-03-28 (2 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 6475BY5
MarkForUpload: True
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic 
root=UUID=dfc0cb00-7e0a-45d6-b7d5-587cf6cbce89 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-26-generic N/A
 linux-backports-modules-3.5.0-26-generic  N/A
 linux-firmware                            1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/15/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET93WW (3.23 )
dmi.board.name: 6475BY5
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: 1S6475BY5L3BDT9A
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: 
dmi:bvnLENOVO:bvr7UET93WW(3.23):bd12/15/2011:svnLENOVO:pn6475BY5:pvrThinkPadT400:rvnLENOVO:rn6475BY5:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 6475BY5
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO

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


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

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https://bugs.launchpad.net/bugs/1162504

Title:
  Intell 5300 iwlwifi, connection drops frequently, pc stalls for
  several seconds

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