Hi:

Check if your WEP key is in HEX ([0-9, A-F])
<example hex_wep_key=c88e6264b/> <= HEXadecimal WEP key.

If this is the case, you must specify so in your wicd connection property, by...

I was getting the same behavior in WEP, WPA... etc. Seldom i can got an ip address from DCHP.

I stopped using wicd, i get associated with the AP using wpa_supplicant and run dhclient, dhclient3,...