Probleme avec wvdial

Bonjour,

wvdial.conf :

[Dialer Defaults]
Init1 = ATZ
Carrier Check = 0
Stupid Mode = 0
Modem Type = Analog Modem
ISDN = 0
Phone = *99#
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Modem = /dev/ttyUSB0
Username = blank
Password = blank
Baud = 9600
---------------------------------

konsole > wvdial :

--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT*99#
--> Waiting for carrier.
ATDT*99#
CONNECT
--> Carrier detected. Waiting for prompt.
--> Don't know what to do! Starting pppd and hoping for the best.
--> Starting pppd at Thu Feb 5 09:23:23 2009
--> Warning: Could not modify /etc/ppp/pap-secrets: Permission denied
--> --> PAP (Password Authentication Protocol) may be flaky.
--> Warning: Could not modify /etc/ppp/chap-secrets: Permission denied
--> --> CHAP (Challenge Handshake) may be flaky.
--> Pid of pppd: 14912
--> Disconnecting at Thu Feb 5 09:23:23 2009
--> The PPP daemon has died: No root priv error (exit code = 3)
--> man pppd explains pppd error codes in more detail.
--> I guess that's it for now, exiting
--> The PPP daemon has ied. (exit code = 3)

alor quesque vous pensez ?