problema con inalambrica en debian
 

Hola tengo un problema que llevo ya unas semanas tratando de arreglar y es el siguiente, tengo inalambrica y me conecto con dhcp
en windows se conecta super bien
pero no puedo conectar el debian (tengo los dos en el mismo pc)
aqui les mando un poco de info
SID:/home/vanik# iwconfig ath0
ath0 IEEE 802.11g ESSID:"USR8054"
Mode:Managed Frequency:2.462 GHz Access Point: Not-Associated
Bit Rate:1 Mb/s Tx-Power:18 dBm Sensitivity=0/3
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=4/94 Signal level=-91 dBm Noise level=-95 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0


SID:/home/vanik# iwlist ath0 scanning
ath0 Scan completed :
Cell 01 - Address: 00:C0:49:EC:4A:42
ESSID:"USR8054"
Mode:Master
Frequency:2.462 GHz (Channel 11)
Quality=14/94 Signal level=-81 dBm Noise level=-95 dBm
Encryption key:off
Bit Rates:1 Mb/s; 2 Mb/s
Extra:bcn_int=100

SID:/home/vanik# dhclient ath0
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.


wifi0: unknown hardware address type 801
wifi0: unknown hardware address type 801
Listening on LPF/ath0/00:14:78:71:cc:24
Sending on LPF/ath0/00:14:78:71:cc:24
Sending on Socket/fallback
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 1
No DHCPOFFERS received.
No working leases in persistent database - sleeping.


No he encontrado a nadie que me una solución haber si alguien ya a pasado por esto
un saludos y gracias