ath9k - no upper layer throughput.

Ubuntu karmic Alpha-3

The ath9k wireless is very unstable on my system. If you place any load at all on the wireless the connection freezes up and upper layer packets don't appear to get through (although iw is showing a lot of RX activity, but little TX).

The association appears to remain in place - just no throughput.

Sometimes the network connection will recover after several minutes and sometimes it locks solid.

This is with the access point about six inches from the laptop and the transmission signal at 87%

ProblemType: Bug
Architecture: amd64
Date: Sun Jul 26 19:04:31 2009
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=a1085570-586c-4eac-a7cb-52ca2f87881e
Lsusb:
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Acer Aspire 5536
Package: linux-image-2.6.31-3-generic 2.6.31-3.19
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-3-generic root=UUID=e544e0c3-bb61-4527-9393-26be9e351588 ro quiet splash
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-3.19-generic
RelatedPackageVersions: linux-backports-modules-2.6.31-3-generic N/A
SourcePackage: linux
Uname: Linux 2.6.31-3-generic x86_64
dmi.bios.date: 02/27/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.03
dmi.board.name: JV50PU
dmi.board.vendor: Acer
dmi.board.version: Rev
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.03:bd02/27/2009:svnAcer:pnAspire5536:pvr0100:rvnAcer:rnJV50PU:rvrRev:cvnAcer:ct10:cvrN/A:
dmi.product.name: Aspire 5536
dmi.product.version: 0100
dmi.sys.vendor: Acer