can not connect to wireless networks

I run a fresh installed Gentoo system and have already tried to get help from my community, but unsuccessfully; here is the url of my post into the official Gentoo discussion forum: http://forums.gentoo.org/viewtopic-t-944500.html
My problem is the following:

I log in as root and start X, then execute "wicd-client" in the xterm.
I get immediately these two differents pop-up error messages:
1) Could not connect to wicd's D-Bus interface. Check the wicd log for error messages
2) The wicd daemon has shut down. The UI will not function properly until it is restarted.

I close the wicd-client window and need also to interrupt the execution of wicd-client by pressing CTRL+C into the xterm

I try:
# rc-update show | grep dbus
And get:
                 dbus | default

Then I try:
# ps aux | grep dbus
And get:
101 12350 0.0 0.1 3020 1064 ? Ss 17:06 0:00 /usr/bin/dbus-daemon --system
root 12528 0.0 0.0 3540 544 tty1 S 17:06 0:00 /usr/bin/dbus-launch --sh-syntax --exit-with-session
root 12529 0.0 0.0 3004 988 ? Ss 17:06 0:00 /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session

Then, I try to restart the wicd daemon from xterm, but I get this error:
"It seems like the daemon is already running. If it is not, please remove /var/run/wicd/wicd.pid and try again"

I write:
# ps aux | grep wicd
And get:
root 12583 4.7 0.7 23204 7216 ? S 17:07 0:02 /usr/bin/python2 -O /usr/share/wicd/daemon/wicd-daemon.py
root 12587 0.8 0.7 12824 7756 ? S 17:07 0:00 /usr/bin/python2 -O /usr/share/wicd/daemon/monitor.py

I kill the first process (i.e. 12583) and then can successfully restart the wicd daemon ("wicd" in xterm).

After that I re-open wicd-client without getting errors.

When I try to connect any network, both secured and unsecured, on the bottom of the wicd-client window I see the messages of the connection attempt ("autenticating...", "obtaining ip address", "done connecting"), but at the end the message displayed is "Not connected", and not "Connected to MY-SSID 192.168.1.125", like it happens with Wicd on another Linux distro running on the same machine.

I can't neither connect with wicd-curses.

Here is the tail of /var/log/wicd/wicd.log
http://pastebin.com/np8TWAWb

Thanks