My father and I recently replaced all the cable lines in the house with higher grade coax. Also we made out cable company come out and replace the line from the pole to the house, and we ran ethernet cable through the whole house to make everything wired (except my sister's notebook).
Anything about 54 on the upstream will kill your connection. Ask your ISP to replace your outside line, also I removed all splitters on my line for the internet connection, we have satellite tv so we don't need cable anywhere else.
My connection is 10mbit for internet (actual internet, not network speed). So I can usually download around 1.5 - 2.0mbps. It's pretty sweet.
Edited by Scott, 28 April 2006 - 02:09 PM.