1mbps download speed?

[dan]

You are sharing the bandwidth your isp has available in your neighborhood. When an area is particularly congested, you'll see exactly what you are experiencing now. Most people use a LOT more downstream bandwidth than upstream, and clog your tubes.

OR, you simply have poor connection between the network and your modem somewhere. Such that your modem doesent hear everything it should, but the local CO can hear it ok. This usually has to do with quality of hardware. Check that all the connections are clean and tight, and there isn't a branch or bird nest causing problems out near the service drop point.