A lot of people have the problem to find themselves with Lucid Lynx 10.04 and experience massive issues when connecting to wireless - me too.
As a service, here some relevant links which promise relief:
Disable IPv6
http://www.webupd8.org/2010/05/how-t...untu-1004.html
Disable IPv6 in firefox
http://ubuntuforums.org/showthread.p...t=disable+ipv6
manually disable auto bandwith mediation of WiFi
sudo iwconfig wlan0 rate 54M
(replace wlan0 with your actual WiFi device)
Disable 802.11n on your router
I tried all of them, and none reliably worked. Every solution which required re-association wtih the AP helped for some time, but nothing helped for long.
First, don't let yourself fool by the disable IPv6 trap - while it is "enabled" it is acutally not used by Lucid!
I have a clean install of Kubuntu 10.04 on an AMD64 Laptop with Broadcom STA driver:
03:00.0 Network controller: Broadcom Corporation BCM4328 802.11a/b/g/n (rev 03)
However I can reliably stabilize my connection for some time either by manually disabling WiFi with the hardware switch or disabling WiFi by software means and re-activating. This brings speed at par with Kubuntu 9.10 until some time.
Can anybody confirm this behaviour?
I already filed a bug @ launchpad: https://bugs.launchpad.net/ubuntu/+s...wl/+bug/581936
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