I subscribe to the 512kbps package, but I'm getting capped at 1024 says my modem. But the speeds I get are very low, only 40kBps. When I check my transfer graph (using DU meter) i get this:

I don't get it. Why does my connection peak to 100kBps, then drop to 0(ZERO!!)kbps then peaks again. I really don't get it. Anyone have any ideas? I thought that it might be something to do with them capping speeds at the DSLAM although my line is capped at 1024.