Either you got too many neighbor doing the same things at the same time (with cable the bandwidth are shared or someone is stealing the connection (when you have wireless without password protection); or you might get another modem_router of your own (not theirs) and try it (but password protect it though). Good luck.
I have Cox's cable broadband but cannot watch streaming video. My connection drops packets too often. Without my wireless router the connection works fine but with it I get the dropped packets. I have tried four different routers (all some version of 'G'). Any ideas? Thanks much, Jim