I have received the same message. Does anyone have a fix on it. I thought it may have to do with admin priviliges, but I was logged on as Admin. FWIT, I have a Pismo 400 w/ 320MB RAM and a dual partition.
Had the same problem this weekend with my OSX install. I had to change to phone # for Earthlink. I'm guessing some of the lines don't support a OSX client yet.