fedora 15 + gnome 3 + wifi

все обновления установлены ? какая версия NM ?

что пишет NM в /var/log/messages ?

скорее всего yum --enablerepo=*testing update NetworkManager спасет

[netgt@wlair ~]$ rpm -qa | grep Network
NetworkManager-gnome-0.9.1.90-1.git20110927.fc15.i686
NetworkManager-glib-0.9.1.90-1.git20110927.fc15.i686
NetworkManager-vpnc-0.9.0-1.fc15.i686
NetworkManager-0.9.1.90-1.git20110927.fc15.i686
NetworkManager-openconnect-0.9.0-2.fc15.i686
NetworkManager-pptp-0.9.0-1.fc15.i686
NetworkManager-gtk-0.9.1.90-1.git20110927.fc15.i686
NetworkManager-openvpn-0.9.0-1.fc15.i686
[netgt@wlair ~]$


[root@wlair ~]# tail -n 100 /var/log/messages
Oct 4 12:51:21 wlair NetworkManager[768]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Oct 4 12:51:21 wlair NetworkManager[768]: <info> Activation (wlan0/wireless): access point 'Auto Maxima' has security, but secrets are required.
Oct 4 12:51:21 wlair NetworkManager[768]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
Oct 4 12:51:21 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Oct 4 12:51:21 wlair NetworkManager[768]: <warn> No agents were available for this request.
Oct 4 12:51:21 wlair NetworkManager[768]: <info> (wlan0): device state change: need-auth -> failed (reason 'no-secrets') [60 120 7]
Oct 4 12:51:21 wlair NetworkManager[768]: <warn> Activation (wlan0) failed for access point (Maxima)
Oct 4 12:51:21 wlair NetworkManager[768]: <info> Marking connection 'Auto Maxima' invalid.
Oct 4 12:51:21 wlair NetworkManager[768]: <warn> Activation (wlan0) failed.
Oct 4 12:51:21 wlair NetworkManager[768]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Oct 4 12:51:21 wlair NetworkManager[768]: <info> (wlan0): deactivating device (reason 'none') [0]
Oct 4 12:51:21 wlair NetworkManager[768]: <info> Policy set 'Wired connection 1' (em1) as default for IPv4 routing and DNS.
Oct 4 12:51:21 wlair NetworkManager[768]: <info> Policy set 'Wired connection 1' (em1) as default for IPv4 routing and DNS.
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Auto-activating connection 'Auto GoodWin Mos'.
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Activation (wlan0) starting connection 'Auto GoodWin Mos'
Oct 4 12:51:24 wlair NetworkManager[768]: <info> (wlan0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Oct 4 12:51:24 wlair NetworkManager[768]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Activation (wlan0/wireless): access point 'Auto GoodWin Mos' has security, but secrets are required.
Oct 4 12:51:24 wlair NetworkManager[768]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Oct 4 12:51:24 wlair NetworkManager[768]: <warn> No agents were available for this request.
Oct 4 12:51:24 wlair NetworkManager[768]: <info> (wlan0): device state change: need-auth -> failed (reason 'no-secrets') [60 120 7]
Oct 4 12:51:24 wlair NetworkManager[768]: <warn> Activation (wlan0) failed for access point (VIRUS)
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Marking connection 'Auto GoodWin Mos' invalid.
Oct 4 12:51:24 wlair NetworkManager[768]: <warn> Activation (wlan0) failed.
Oct 4 12:51:24 wlair NetworkManager[768]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Oct 4 12:51:24 wlair NetworkManager[768]: <info> (wlan0): deactivating device (reason 'none') [0]
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Policy set 'Wired connection 1' (em1) as default for IPv4 routing and DNS.
Oct 4 12:51:24 wlair NetworkManager[768]: <info> Policy set 'Wired connection 1' (em1) as default for IPv4 routing and DNS.
Oct 4 12:51:29 wlair NetworkManager[768]: <info> Activation (wlan0) starting connection 'Auto Maxima'
Oct 4 12:51:29 wlair NetworkManager[768]: <info> (wlan0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Oct 4 12:51:29 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Oct 4 12:51:29 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Oct 4 12:51:29 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Oct 4 12:51:29 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Oct 4 12:51:29 wlair NetworkManager[768]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Oct 4 12:51:29 wlair NetworkManager[768]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Oct 4 12:51:29 wlair NetworkManager[768]: <info> Activation

ага, ну обновление до 0.9.1.90-3 из updates-testing должно помочь

действительно помогло