An update from Afrihost which echos what’s happening to IS-resellers of DSL bandwidth in South Africa:

IS have removed ADSL users from emergency SAT3 backup and thus you will not be able to access international websites via the normal channels.

Proxying is touted here to be the solution. Full background to the story of Seacom’s emergency maintenance is here: SEACOM maintenance extended until 30 April – South African Internet slow.