wlan0 and eth0 can't connect

[GuiEssence]

Hi all,

after reboot my system I can't access any network anymore.

It recognize wireless network, but when I tried to connect appears a message 'Can't connect to network'

Even with wire appears that message.

I tried to unninstal NetworkManager and install Wicd, but it won't work too...

Anyone can help me?!

Thanks!

EDIT

I reinstall NetworkManager and reboot, it connect fine.

[secipolla]

Maybe it was because the name changed (like here, the wired network is em1)?