While its questionable how people whose connections are down can see and answer a thread like this (perhaps they have internet at work like me), I'm going to ask it anyway:
Anyone in the Rondebosch (686xxxx), Pinelands (531xxxx), and maybe other areas in Cape Town having problems connecting to ADSL this morning? Happened to me from around 8 something. My modem's log say no response to authentication request (or something similar). I have a friend in Pinelands (different exchange to mine) who is also having the same problem. I also have friends in the Northern Suburbs (Edgemead, Bothasig) whose connections are still working.
I'm at work now so I'm not sure what the current status is.