I live in Glenhazel, Johannesburg. I'm using CellC pre-paid data cards in both my iPad and a speedstick modem. During the day I get really good data speed. Almost never less than 3mbps and I've lately been getting in excess of 9mbps with the speedstick. However, every night at almost exactly 8pm its like CellC switches off the network for the night! Data throughput becomes almost non-existent until about 7am when things work again. I can understand maybe slow speeds because there are more users but the problem is like someone switched off the network completely!