Comment 36 for bug 548992

I most certainly had/have this problem. Drove me crazy enough to perform a fresh install of Ubuntu Lucid 10.04 retaining only home directories. Was able to reconnect my way through to a fully updated installation with all the most recent updates/kernel (Linux 2.6.32-21-generic kernel) and no added packages. I continued to experience the problem (deauthenticating by local choice reason=3 followed by numerous reconnections and disconnections). I disabled ipv6 as described in this thread and rebooted - error persisted. I attempted to disable power management on my card, but my card does not support that setting. I installed wicd and removed network-manager and network-manager-gnome. I then rebooted. Wireless network now seems solid and I'm seeing none of the previous drops. Speed is fast and consistent - even with long periods between use (at least long enough that I would see the problem previously).