Fatto ecco i risultati:
con ifconfig=

Link encap:Ethernet HWaddr 00:17:31:67:C4:67
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:233

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:32 errors:0 dropped:0 overruns:0 frame:0
TX packets:32 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2368 (2.3 KiB) TX bytes:2368 (2.3 KiB)

wlan0 Link encap:Ethernet HWaddr 00:15:AF:02:145
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

con iwconfig=

lo no wireless extensions.

eth0 no wireless extensions.

wlan0 802.11b/g Mode:Managed Channel=4
Access Point: Not-Associated Bit Rate=11 Mb/s
Retryn Fragment thrff
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0


e con ps aux | grep pppoe=

giuseppe 4993 0.0 0.0 2800 760 pts/1 S+ 20:41 0:00 grep pppoe