Binary package hint: network-manager

I have Dell studio XPS 13 running:
Description: Ubuntu 9.10
Release: 9.10

with wifi card (lspci):
06:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01)

that works (tries to) with ath9k module.

It connects to my access point and works ok however, It disconnects every 2-3 min saying (in dmesg):
[ 311.600306] wlan0: RX AssocResp from 00:1d:68:0c:97:63 (capab=0x411 status=0 aid=2)
and then automatically reconnects... I have tried different drivers and other things....

Interestingly when I right-clicked on network manger applet, select ¨disable networking¨ and then set up everything myself on console using iwconfig and dhclient..... IT WORKS!!!
no disconnections....
wpa_supplicant is still running in a background but not doing anything (my wifi has WEP encryption).

I´ve seen some similar reports in Internet but they seem to think that it is a driver problem when to me it looks like a NetworkManager issue...

Hope it helps....

drphd

ProblemType: Bug
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Sat Dec 12 19:42:18 2009
DistroRelease: Ubuntu 9.10
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
IpRoute:
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.65
 172.16.77.0/24 dev vmnet1 proto kernel scope link src 172.16.77.1
 172.16.158.0/24 dev vmnet8 proto kernel scope link src 172.16.158.1
 default via 192.168.1.254 dev wlan0
NonfreeKernelModules: nvidia
Package: network-manager 0.8~a~git.20091013t193206.679d548-0ubuntu1
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
SourcePackage: network-manager
Uname: Linux 2.6.31-16-generic x86_64