I am using a Sierra 881 USB Wireless modem on a Toshiba Satellite A 105
laptop,Ubuntu 10.04.

I configured Kppp following the Sierra guide and after hitting 'connect'
it says 'connected' but the computer is not on line. There is a box
marking time saying WWAN is connected and the modem is blinking like it
is passing data.

When I click the network icon, ATT Data Connect is there and says
'disconnected', when I click it, a box comes up saying 'Enter password
to unlock your login keyring. The login keyring did not get unlocked
when you logged into your computer'

After putting in password the icon blinks a few times like it is
connecting then quits and gets a vertical red line through it.

When I click ATT Data Connect again, the same thing happens.

I am a real network dummy, I do not know what to do next, any help would
be appreciated.