pptp client 拔号问题

guanwg

使用webmin下 pptp client拔号. 只成功过一次.后来再拔,提示以下错误.
Oct 19 07:14:31 localhost smartd[3090]: Device: /dev/hda, 2 Offline uncorrectable sectors
Oct 19 07:44:32 localhost smartd[3090]: Device: /dev/hda, 33 Currently unreadable (pending) sectors
Oct 19 07:44:32 localhost smartd[3090]: Device: /dev/hda, 2 Offline uncorrectable sectors
Oct 19 08:14:31 localhost smartd[3090]: Device: /dev/hda, 33 Currently unreadable (pending) sectors
Oct 19 08:14:31 localhost smartd[3090]: Device: /dev/hda, 2 Offline uncorrectable sectors
Oct 19 08:44:31 localhost smartd[3090]: Device: /dev/hda, 33 Currently unreadable (pending) sectors
Oct 19 08:44:31 localhost smartd[3090]: Device: /dev/hda, 2 Offline uncorrectable sectors
Oct 19 08:45:26 localhost pptp[17912]: anon log[main:pptp.c:314]: The synchronous pptp option is NOT activated
Oct 19 08:45:26 localhost pptp[17912]: anon fatal[main:pptp.c:330]: Could not find free pty.
Oct 19 08:45:28 localhost setroubleshoot:      SELinux is preventing the /usr/sbin/pptp from using potentially mislabeled files (/tmp/.webmin/981743_1_conn.cgi).      


请教一下,是何原因.