[问题]Ubuntu6.06设置拨号上网失败

[Frogge]

按照在论坛上搜的方法
sudo pppoeconf
然后一步一步设置，输入帐号和密码
但 sudo pon dsl-provider 后仍连不上网络，使用 plog 命令查看连接情况，显示

jchhan@jchhan-desktop:~$ sudo pon dsl-provider
Plugin rp-pppoe.so loaded.
jchhan@jchhan-desktop:~$ sudo plog
Sep 26 10:40:25 jchhan-desktop pppd[3655]: CHAP authentication failed
Sep 26 10:40:25 jchhan-desktop pppd[3655]: Connection terminated.
Sep 26 10:40:27 jchhan-desktop pppd[5073]: Plugin rp-pppoe.so loaded.
Sep 26 10:40:27 jchhan-desktop pppd[5075]: pppd 2.4.4b1 started by root, uid 0
Sep 26 10:40:27 jchhan-desktop pppd[5075]: PPP session is 665
Sep 26 10:40:27 jchhan-desktop pppd[5075]: Using interface ppp0
Sep 26 10:40:27 jchhan-desktop pppd[5075]: Connect: ppp0 <--> eth0
Sep 26 10:40:29 jchhan-desktop pppd[5075]: CHAP authentication failed: CHAP authentication failure, unit 665
Sep 26 10:40:29 jchhan-desktop pppd[5075]: CHAP authentication failed
Sep 26 10:40:29 jchhan-desktop pppd[5075]: Connection terminated.
jchhan@jchhan-desktop:~$

请各位高手指点，到底是怎么回事啊？

[senhtry]

验证失败，用户名和密码输对了没

[Frogge]

是对的啊，检查了好多遍了...