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[Mathieu Trudel-Lapierre <mathieu.tl@xxxxxxxxx>]

There's an kernel crash listed there, and it seems to be the most likely
cause for failing to be able to send or receive data:

Sep 14 23:06:15 Latitude-E6400 NetworkManager[958]: <info> (wlan0): supplicant interface state: 4-way handshake -> completed
Sep 14 23:06:34 Latitude-E6400 kernel: [14680.590081] iwlagn 0000:0c:00.0: iwlagn_tx_agg_start on ra = 94:44:52:9c:72:bc tid = 0
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000349] iwlagn 0000:0c:00.0: Read index for DMA queue txq_id (10) index 129 is out of range [0-256] 184 184
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000364] iwlagn 0000:0c:00.0: Read index for DMA queue txq_id (10) index 129 is out of range [0-256] 184 184
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000373] iwlagn 0000:0c:00.0: Received BA when not expected
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000382] iwlagn 0000:0c:00.0: Read index for DMA queue txq id (10), index 130, is out of range [0-256] 184 184.
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000392] ------------[ cut here ]------------
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000430] WARNING: at /build/buildd/linux-3.0.0/drivers/net/wireless/iwlwifi/iwl-rx.c:626 iwl_rx_statistics+0x558/0x570 [iwlagn]()
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000438] Hardware name: Latitude E6400                  
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000443] len -4 doesn't match BT (524) or normal (480)
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000448] Modules linked in: rfcomm bnep bluetooth parport_pc ppdev binfmt_misc snd_hda_codec_hdmi snd_hda_codec_idt joydev snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event arc4 uvcvideo videodev v4l2_compat_ioctl32 dell_wmi sparse_keymap snd_seq pcmcia dell_laptop dcdbas psmouse iwlagn serio_raw mac80211 snd_timer snd_seq_device i915 yenta_socket pcmcia_rsrc pcmcia_core cfg80211 snd drm_kms_helper drm wmi soundcore i2c_algo_bit snd_page_alloc video lp parport usbhid hid sdhci_pci sdhci firewire_ohci firewire_core crc_itu_t e1000e ahci libahci
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000554] Pid: 0, comm: swapper Not tainted 3.0.0-11-generic #17-Ubuntu
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000560] Call Trace:
Sep 14 23:08:43 Latitude-E6400 kernel: [14810.000565]  <IRQ>  [<ffffffff8105e82f>] warn_slowpath_common+0x7f/0xc0

Reassigning to 'linux'; since NM only deals with establishing
connections, not any step in pushing bits around.

** Package changed: network-manager (Ubuntu) => linux (Ubuntu)

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https://bugs.launchpad.net/bugs/850626

Title:
  Connected to home wifi, but can't transfer data

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  It might happend that even if the wifi is correctly connected to my
  home router, it can't transfer any data, either to/from internet,  but
  also to/from the router or other devices connected to the home
  network.

  Usually a workaroud is to disable wireless from the network-manager
  menu, and re-enable it, until you get a "good" connection.

  In the attached logfiles I had a "bad" connection.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: network-manager 0.9.0-0ubuntu3
  ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
  Uname: Linux 3.0.0-11-generic x86_64
  ApportVersion: 1.23-0ubuntu1
  Architecture: amd64
  Date: Thu Sep 15 07:43:02 2011
  Gconf:
   
  IfupdownConfig:
   auto lo
   iface lo inet loopback
  IpRoute:
   default via 192.168.1.1 dev wlan0  proto static 
   169.254.0.0/16 dev wlan0  scope link  metric 1000 
   192.168.1.0/24 dev wlan0  proto kernel  scope link  src 192.168.1.4
  Keyfiles: Error: [Errno 2] No such file or directory
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)

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